melonoma, melenoma, melinoma
What Is Melanoma?
Melanoma is a type of skin cancer. It begins in certain cells in the
skin called melanocytes.
To understand melanoma, it is helpful to know about the skin and about
melanocytes -- what they do, how they grow, and what happens when they
The skin is the body's largest organ. It protects against heat,
sunlight, injury, and infection. It helps regulate body temperature,
stores water and fat, and produces vitamin D. The skin has two main
layers: the outer epidermis
and the inner dermis.
The epidermis is mostly made up of flat, scalelike cells called squamous
cells. Round cells called basal
cells lie under the squamous cells in the epidermis. The lower
part of the epidermis also contains melanocytes.
The dermis contains blood vessels, lymphatic vessels, hair
follicles, and glands. Some of these glands produce sweat, which
helps regulate body temperature, and some produce sebum,
an oily substance that helps keep the skin from drying out. Sweat and
sebum reach the skin's surface through tiny openings called pores.
Epidermis and dermis
Melanocytes and Moles
Melanocytes are found throughout the lower part of the epidermis. They
that gives skin its natural color. When skin is exposed to the sun,
melanocytes produce more pigment, causing the skin to tan, or darken.
Sometimes, clusters of melanocytes and surrounding tissue form benign
(noncancerous) growths called moles. (Doctors also call a mole a nevus;
the plural is nevi.) Moles are very common. Most people have between 10
and 40 of these flesh-colored, pink, tan, or brown areas on the skin.
Moles can be flat or raised. They are usually round or oval and smaller
than a pencil eraser. They may be present at birth or may appear later on
-- usually before age 40. Moles generally grow or change only slightly
over a long period of time. They tend to fade away in older people. When
moles are surgically removed, they normally do not return.
is a group of many different diseases that have some important things in
common. They all begin in cells. Normally, cells grow and divide to
produce more cells only when the body needs them. This orderly process
helps keep the body healthy. Sometimes cells keep dividing when new cells
are not needed, creating a mass of extra tissue. This mass is called a
growth or tumor.
Tumors can be benign or malignant.
Benign tumors are not cancer. They often can be removed and,
in most cases, they do not come back. Cells in benign tumors do not
spread to other parts of the body. Most importantly, benign tumors are
rarely a threat to life.
Malignant tumors are cancer. Cells in malignant tumors are
abnormal and divide without control or order. These cancer cells can
invade and destroy the tissue around them. Cancer cells can also break
away from a malignant tumor and enter the bloodstream or lymphatic
system (the tissues and organs that produce and store cells that
fight infection and disease). This process, called metastasis,
is how cancer spreads from the original tumor to form new tumors in
other parts of the body. When cancer spreads (metastasizes) to another
part of the body, the new tumor has the same kind of abnormal cells and
the same name as the original tumor.
General Information on Melanoma
Melanoma occurs when melanocytes (pigment cells) become malignant. Most
pigment cells are in the skin; when melanoma starts in the skin, the
disease is called cutaneous
melanoma. Melanoma may also occur in the eye and is called ocular melanoma
or intraocular melanoma. Rarely, melanoma may arise in the meninges,
nodes, or other areas where melanocytes are found. Melanomas
arising in areas other than the skin are not discussed in this
Melanoma can occur on any skin surface. In men, it is often found on
the trunk (the area from the shoulders to the hips) or the head and neck.
In women, melanoma often develops on the lower legs. Melanoma is rare in
black people and others with dark skin. When it does develop in
dark-skinned people, it tends to occur under the fingernails or toenails,
or on the palms or soles. The chance of developing melanoma increases with
age, but this disease affects people of all age groups. Melanoma is one of
the most common cancers in young adults.
When melanoma spreads, cancer cells are also found in the lymph nodes
(also called lymph glands). If the cancer has reached the lymph nodes, it
may mean that cancer cells have spread to other parts of the body such as
the liver, lungs, or brain. In such cases, the cancer cells in the new
tumor are still melanoma cells, and the disease is called metastatic
melanoma rather than liver, lung, or brain cancer.
Signs and Symptoms of Melanoma
Often, the first sign of melanoma is a change in the size,
shape, color, or feel of an existing mole. Most melanomas have a black or
blue-black area. Melanoma also may appear as a new, black, abnormal, or
Pictures of Melanoma
If you have a question or concern about something on your skin, do not
use these pictures of melanoma to try to diagnose it yourself. The following melanoma pictures are useful
examples, but they cannot take the place of a doctor's examination.
Thinking of "ABCD" can help you remember what to watch for:
Asymmetry -- The shape of one half does not match the other.
Border -- The edges are often ragged, notched, blurred, or
irregular in outline; the pigment may spread into the surrounding skin.
Color -- The color is uneven. Shades of black, brown, and tan
may be present. Areas of white, grey, red, pink, or blue also may be
Diameter -- There is a change in size, usually an increase.
Melanomas are usually larger than the eraser of a pencil (5 mm or 1/4
Melanomas can vary greatly in the ways they look. Many show all of the
ABCD features. However, some may show changes or abnormalities in only one
or two of the ABCD features.
Early melanomas may be found when a pre-existing mole changes slightly
-- such as forming a new black area. Other frequent findings are newly
formed fine scales or itching in a mole. In more advanced melanoma, the
texture of the mole may change. For example, it may become hard or lumpy.
Although melanomas may feel different and more advanced tumors may itch,
ooze, or bleed, melanomas usually do not cause pain.
Melanoma can be cured if it is diagnosed and treated when the tumor is
thin and has not deeply invaded the skin. However, if a melanoma is not
removed at its early stages, cancer cells may grow downward from the skin
surface, invading healthy tissue. When a melanoma becomes thick and deep,
the disease often spreads to other parts of the body and is difficult to
A skin examination is often part of a routine checkup by a doctor,
nurse specialist, or nurse practitioner. People also can check their own
skin for new growths or other changes. (The "How
To Do a Skin Self-Exam" section has a simple guide on how to do a skin
self-exam.) Changes in the skin or a mole should be reported to the doctor
or nurse without delay. The person may be referred to a dermatologist,
a doctor who specializes in diseases of the skin.
People who have had melanoma have a high risk of developing a new
melanoma. Also, those with relatives who have had this disease have an
increased risk. Doctors may advise people at risk to check their skin
regularly and to have regular skin exams by a doctor or nurse
Some people have certain abnormal-looking moles, called dysplastic
nevi or atypical moles, that may be more likely than normal moles
to develop into melanoma. Most people with dysplastic nevi have just a few
of these abnormal moles; others have many. They and their doctor should
examine these moles regularly to watch for changes.
Dysplastic nevi often look very much like melanoma. Doctors with
special training in skin diseases are in the best position to decide
whether an abnormal-looking mole should be closely watched or should be
removed and checked for cancer.
In some families, many members have a large number of dysplastic nevi,
and some have had melanoma. Members of these families have a very high
risk for melanoma. Doctors often recommend that they have frequent
checkups (every 3 to 6 months) so that any problems can be detected early.
The doctor may take pictures of a person's skin to help in detecting any
changes that occur.
Diagnosis and Staging
If the doctor suspects that a spot on the skin is melanoma, the patient
will need to have a biopsy.
A biopsy is the only way to make a definite diagnosis. In this procedure,
the doctor tries to remove all of the suspicious-looking growth. If the
growth is too large to be removed entirely, the doctor removes a sample of
the tissue. A biopsy can usually be done in the doctor's office using a
then examines the tissue under a microscope to check for cancer cells.
Sometimes it is helpful for more than one pathologist to look at the
tissue to determine whether melanoma is present.
A person who needs a biopsy may want to ask the doctor some of
the following questions:
Why do I need to have a biopsy?
How long will it take? Will it hurt?
Will the entire tumor be removed?
What side effects can I expect?
How soon will I know the results?
If I do have cancer, who will talk with me about treatment?
If melanoma is found, the doctor needs to learn the extent, or stage,
of the disease before planning treatment. The treatment plan takes into
account the location and thickness of the tumor, how deeply the melanoma
has invaded the skin, and whether melanoma cells have spread to nearby
lymph nodes or other parts of the body. Removal of nearby lymph nodes for
examination under a microscope is sometimes necessary. (Such surgery may
be considered part of the treatment because removing cancerous lymph nodes
may help control the disease.) The doctor also does a careful physical
exam and, depending on the thickness of the tumor, may order chest x-rays;
blood tests; and scans
of the liver, bones, and brain.
Information on Melanoma Treatment
After diagnosis and staging, the doctor develops a treatment plan to
fit each patient's needs. Treatment for melanoma depends on the extent of
the disease, the patient's age and general health, as well as other
People with melanoma are often treated by a team of specialists, which
may include a dermatologist, surgeon, medical
oncologist, and plastic
surgeon. The standard treatment for melanoma is surgery; in some
cases, doctors may also use chemotherapy,
therapy, or radiation
therapy. The doctors may decide to use one treatment method or a
combination of methods.
Some patients take part in a clinical
trial, which is a research study using new treatment methods. Such
trials are designed to improve cancer treatment. (The "Clinical
Trials" section has more information about clinical trials).
Getting a Second Opinion
Before starting treatment, the patient may want a second doctor to
review the diagnosis and treatment plan. It may take a week or two to
arrange for a second opinion. A short delay will not reduce the chance
that treatment will be successful. Some insurance companies require a
second opinion; many others will cover a second opinion if the patient
There are a number of ways to find a doctor who can give a second
One doctor may refer the patient to another who has special interest
and training in treating melanoma.
The Cancer Information Service, at 1-800-4-CANCER, can tell callers
about treatment facilities, including cancer centers and other programs
supported by the National Cancer Institute.
Patients can get the names of doctors from their local medical
society, a nearby hospital, or a medical school.
The Official ABMS Directory of Board Certified Medical
Specialists lists doctors' names along with their specialty and
their background. This resource is in most public
Preparing for Melanoma Treatment
Many people with cancer want to learn all they can about their disease
and their treatment choices so they can take an active part in decisions
about their medical care. When a person is diagnosed with cancer, shock
and stress are natural reactions. These feelings may make it difficult for
patients to think of everything they want to ask the doctor. Often, it
helps to make a list of questions. To help remember what the doctor says,
patients may take notes or ask whether they may use a tape recorder. Some
people also want to have a family member or friend with them when they
talk to the doctor -- to take part in the discussion, to take notes, or
just to listen.
These are some questions a patient may want to ask the doctor
before treatment begins:
What is my diagnosis?
What is the stage of the disease?
What are the treatment choices? Which do you recommend?
What are the chances that the treatment will be successful?
How will we know if the treatment is working?
How long will the treatment last?
What can I do to take care of myself during treatment?
What new treatments are being studied? Would a clinical trial
be appropriate for me?
What are the risks and possible side
effects of each treatment?
How will I feel after the operation?
If I have pain, how can it be controlled?
Will I need more treatment after surgery?
Will I need a skin
graft or plastic surgery? Will there be a scar?
Will treatment affect my normal activities? If so, for how
How often will I need checkups?
What is the treatment likely to
Patients do not need to ask all their questions or remember all the
answers at one time. They will have other chances to ask the doctor to
explain things and to get more information.
Methods of Treatment
Surgery to remove (excise) a melanoma is the standard treatment for
this disease. It is necessary to remove not only the tumor but also some
normal tissue around it in order to minimize the chance that any cancer
will be left in the area.
The width and depth of surrounding skin that needs to be removed
depends on the thickness of the melanoma and how deeply it has invaded the
skin. In cases in which the melanoma is very thin, enough tissue is often
removed during the biopsy, and no further surgery is necessary. If the
melanoma was not completely removed during the biopsy, the doctor takes
out the remaining tumor. In most cases, additional surgery is performed to
remove normal-looking tissue around the tumor (called the margin) to make
sure all melanoma cells are removed. This is necessary, even for thin
melanomas. For thick melanomas, it may be necessary to do a wider excision
to take out a larger margin of tissue.
If a large area of tissue is removed, a skin graft may be done at the
same time. For this procedure, the doctor uses skin from another part of
the body to replace the skin that was removed.
Lymph nodes near the tumor may be removed during surgery because cancer
can spread through the lymphatic system. If the pathologist finds cancer
cells in the lymph nodes, it may mean that the disease has spread to other
parts of the body.
Surgery is generally not effective in controlling melanoma that is
known to have spread to other parts of the body. In such cases, doctors
may use other methods of treatment, such as chemotherapy, biological
therapy, radiation therapy, or a combination of these methods. When
therapy is given after surgery (primary therapy) to remove all cancerous
tissue, the treatment is called adjuvant
therapy. The goal of adjuvant therapy is to kill any undetected
cancer cells that may remain in the body.
Chemotherapy is the use of drugs to kill cancer cells. It is generally
therapy, meaning that it can affect cancer cells throughout the
body. In chemotherapy, one or more anticancer drugs are given by mouth or
by injection into a blood vessel (intravenous).
Either way, the drugs enter the bloodstream and travel through the
Chemotherapy is usually given in cycles: a treatment period followed by
a recovery period, then another treatment period, and so on. Usually a
patient has chemotherapy as an outpatient (at the hospital, at the
doctor's office, or at home). However, depending on which drugs are given
and the patient's general health, a short hospital stay may be needed.
One method of giving chemotherapy drugs currently under investigation
is called limb
perfusion. It is being tested for use when melanoma occurs only on
an arm or leg. In limb perfusion the flow of blood to and from the limb is
stopped for a while with a tourniquet. Anticancer drugs are then put into
the blood of the limb. The patient receives high doses of drugs directly
into the area where the melanoma occurred. Since most of the anticancer
drugs remain in one limb, limb perfusion is not truly systemic
Biological therapy (also called immunotherapy) is a form of treatment
that uses the body's immune system, either directly or indirectly, to
fight cancer or to lessen side effects caused by some cancer treatments.
Biological therapy is also a systemic therapy and involves the use of
substances called biological
response modifiers (BRMs). The body normally produces these
substances in small amounts in response to infection and disease. Using
modern laboratory techniques, scientists can produce BRMs in large amounts
for use in cancer treatment. In some cases, biological therapy given after
surgery can help prevent melanoma from recurring. For patients with
metastatic melanoma or a high risk of recurrence, interferon-alfa
(also called aldesleukin) may be recommended after surgery. Colony-stimulating
factors and tumor vaccines
are examples of other BRMs under study.
In some cases, radiation therapy (also called radiotherapy) is used to
relieve some of the symptoms caused by melanoma. Radiation therapy is the
use of high-energy rays to kill cancer cells. Radiation therapy is a local
therapy; it affects cells only in the treated area. Radiation
therapy is most commonly used to help control melanoma that has spread to
the brain, bones, and other parts of the body.
Many people with melanoma take part in clinical trials (research
studies). Doctors conduct clinical trials to learn about the effectiveness
and side effects of new treatments. In some trials, all patients receive
the new treatment. In others, doctors compare different therapies by
giving the new treatment to one group of patients and the standard therapy
to another group; or they may compare one standard treatment with another.
Research like this has led to significant advances in the treatment of
melanoma. Each achievement brings researchers closer to the eventual
control of melanoma.
A new procedure under study, called sentinel
lymph node biopsy, may eventually reduce the number of lymph nodes
that need to be removed for biopsy and possibly prevent or lessen the
severity of lymphedema
(build up of excess lymph in tissue that causes swelling). In this
procedure, either a blue dye or a small amount of radioactive material is
injected near the area where the tumor was. This material flows into the
sentinel lymph node(s) (the first lymph node(s) that the cancer is likely
to spread to from the primary tumor). A surgeon then looks for the dye or
uses a scanner to find the sentinel lymph node(s) and removes it for
examination by a pathologist. If the sentinel lymph node(s) is positive
for cancer cells, then the rest of the surrounding lymph nodes are usually
removed; if it is negative, the remaining lymph nodes may not need to be
Doctors are also studying new ways of giving chemotherapy, biological
therapies, and radiation therapy; new drugs and drug combinations; and new
ways of combining various types of treatment. Some trials are designed to
explore ways to reduce the side effects of treatment and to improve the
quality of life.
People who take part in these studies have the first chance to benefit
from treatments that have shown promise in earlier research. They also
make an important contribution to medical science. While clinical trials
may pose some risks for the people who take part, each study takes steps
to protect patients. Patients who are interested in taking part in a
clinical trial should talk with their doctor.
Another way to learn about clinical trials is through PDQ
, a cancer information database
developed by the National Cancer Institute. PDQ contains information about
cancer treatment and about clinical trials in progress throughout the
country. The Cancer Information Service can provide PDQ information to
patients and the public.
Side Effects of Melanoma Treatment
Doctors plan treatment to keep side effects to a minimum, but it is
hard to limit the effects of therapy so that only cancer cells are removed
or destroyed. Because treatment also damages healthy cells and tissues, it
often causes side effects.
The side effects of cancer treatment depend mainly on the type and
extent of the treatment. Side effects may not be the same for everyone,
and they may change from one treatment to the next. Doctors and nurses can
explain the possible side effects of treatment, and they can help relieve
symptoms that may occur during and after treatment.
The side effects of surgery depend mainly on the size and location of
the tumor and the extent of the operation. Although patients may be
uncomfortable during the first few days after surgery, this pain can be
controlled with medicine. People should feel free to discuss pain relief
with the doctor or nurse. It is also common for patients to feel tired or
weak for awhile. The length of time it takes to recover from an operation
varies for each patient.
Scarring may also be a concern for some patients. To avoid causing
large scars, doctors remove as little tissue as they can without
increasing the chance of recurrence. In general, the scar from surgery to
remove an early stage melanoma is a small line (often 1 to 2 inches long),
and it fades with time. How noticeable the scar is depends on where the
melanoma was located, how well the person heals, and whether the person
develops raised scars called keloids.
When a tumor is large and thick, more surrounding skin and other tissue
(including muscle) are removed. Although skin grafts reduce scarring from
the removal of large growths, these scars will still be quite
Surgery to remove the lymph nodes from the underarm or groin
may damage the lymphatic system and slow the flow of lymph
in the arm or leg. Lymph may build up in a limb and cause swelling
(lymphedema). The doctor or nurse can suggest exercises or other ways to
reduce swelling if it becomes a problem. Also, it is harder for the body
to fight infection in a limb after nearby lymph nodes have been removed,
so the patient will need to protect the arm or leg from cuts, scratches,
bruises, or burns that may lead to infection. If an infection does
develop, the patient should see the doctor right away.
The side effects of chemotherapy depend mainly on the drugs and the
doses received. In addition, as with other types of treatment, side
effects vary from person to person. Generally, anticancer drugs affect
cells that divide rapidly. In addition to cancer cells, these include
blood cells, which fight infection, help the blood to clot, or carry
oxygen to all parts of the body. When blood cells are affected, people are
more likely to get infections, may bruise or bleed easily, and may feel
unusually weak or tired. Cells in hair roots and cells that line the
digestive tract also divide rapidly. As a result, people may lose their
hair and may have other side effects, such as poor appetite, nausea and
vomiting, or mouth and lip sores. These side effects generally go away
gradually during the recovery periods between treatments or after
treatment is over.
The side effects caused by biological therapy vary with the type of
treatment. These treatments may cause flu-like symptoms, such as chills,
fever, muscle aches, weakness, loss of appetite, nausea, vomiting, and
diarrhea. Patients may also bleed or bruise easily, get a skin rash, or
have swelling. These problems can be severe, but they go away after
The side effects of radiation therapy depend on the amount of radiation
given and the area being treated. Side effects that may occur during
treatment include fatigue and hair loss in the treated area. Although the
side effects of radiation therapy can be unpleasant, the doctor can
usually treat or control them. It also helps to know that, in most cases,
side effects are not permanent.
Nutrition for People with Cancer
Eating well during cancer treatment means getting enough calories and
protein to help prevent weight loss and regain strength. This often helps
people feel better and have more energy.
Some people with cancer find it hard to eat well because they may lose
their appetite. In addition, common side effects of treatment, such as
nausea, vomiting, or mouth sores, can make eating difficult. Often, foods
taste different. Also, people being treated for cancer may not feel like
eating when they are uncomfortable or tired.
Doctors, nurses, and dietitians can offer advice on how to get enough
calories and protein during cancer treatment.
Melanoma patients have a high risk of developing separate new
melanomas. Some also are at risk for a recurrence of the original melanoma
in nearby skin or in other parts of the body.
To increase the chance that a new melanoma will be detected as early as
possible, patients should follow their doctor's schedule for regular
checkups. It is especially important for patients who have dysplastic nevi
and a family history of melanoma to have frequent checkups.
Patients also should examine their skin monthly (keeping in mind the
"ABCD" guidelines in the "Pictures of Melanoma" section and the skin self-exam guide
described in "How
To Do a Skin Self-Exam") and follow their doctor's advice about how to
reduce their chance of developing another melanoma. General information
about preventing melanoma is described in the "Causes,
Risk Factors, and Prevention" section. You may also wish to examine the section below: "Keeping on top of Your Condition"
The chance of recurrence is greater for patients whose melanoma was
thick or had spread to nearby tissue than for patients with very thin
melanomas. Followup care for those who have a high risk of recurrence may
include x-rays; blood tests; and scans of the chest, liver, bones, and
Recovery and Outlook
It is natural for anyone facing cancer to be concerned about what the
future holds. Understanding the nature of cancer and what to expect can
help patients and their loved ones plan treatment, anticipate lifestyle
changes, and make quality of life and financial decisions.
Cancer patients frequently ask their doctors, "What is my prognosis?"
Prognosis is a prediction of the future course and outcome of a disease
and an indication of the likelihood of recovery. When doctors discuss a
patient's prognosis, they are attempting to project what is likely to
occur for that individual patient.
Sometimes people use statistics they have heard to try to figure out
their own chances of being cured. However, statistics reflect the
experience of large groups of patients; they cannot be used to predict
what will happen to a particular patient because no two patients are
alike. The prognosis for a person with melanoma can be affected by many
factors, particularly the stage of the cancer and the patient's general
health and response to treatment. The doctor who is most familiar with the
patient's situation is in the best position to help interpret statistics
and discuss the patient's prognosis.
When doctors talk about surviving cancer, they may use the term
remission rather than cure. Although many people with melanoma are
successfully treated, doctors use this term because cancer can return.
Many patients find it helpful to discuss the possibility of recurrence
with the doctor.
Support for People with Cancer
Living with a serious disease is not easy. People with cancer and those
who care about them face many problems and challenges. Coping with these
problems is often easier when people have helpful information and support
Friends and relatives can be very supportive. It also helps many
patients to discuss their concerns with others who have cancer. Cancer
patients often get together in support groups, where they can share what
they have learned about coping with cancer and the effects of treatment.
It is important to keep in mind, however, that each person is different.
Treatments and ways of dealing with cancer that work for one person may
not be right for another -- even if they both have the same kind of
cancer. It is always a good idea to discuss the advice of friends and
family members with the doctor.
Cancer patients may worry about holding their jobs, caring for their
families, keeping up with daily activities, or starting new relationships.
Concerns about tests, treatments, hospital stays, and medical bills are
also common. The doctor can answer questions about treatment, working,
outlook (prognosis), and the activity level people may be able to manage.
Meeting with a nurse, social worker, counselor, or member of the clergy
can be helpful to people who want to talk about their feelings or discuss
Causes, Risk Factors, and Prevention
Researchers at hospitals and medical centers all across the country are
studying melanoma. They are trying to learn what causes the disease and
how to prevent it.
At this time, the causes of melanoma are not fully understood. It is
clear, however, that this disease is not contagious; no one can
"catch" cancer from another person.
By studying patterns of cancer in the population, researchers have
found certain risk
factors that are more common in people who develop melanoma than
in people who do not get this disease. It is important to know, however,
that most people with these risk factors do not get melanoma, and many who
do get this disease have none of these risk factors.
The following are some of the factors associated with this disease:
Family history of melanoma -- Having two or more close
relatives who have had this disease is a risk factor because melanoma
sometimes runs in families. About 10 percent of all patients with
melanoma have family members who also have had this disease. When
melanoma runs in a family, the family members should be checked
regularly by a doctor.
Dysplastic nevi -- Dysplastic nevi are more likely than
ordinary moles to become cancerous. Many people have only a few of these
abnormal moles; the risk of melanoma is greater for people with a large
number of dysplastic nevi. The risk is especially high for people who
have a family history of both dysplastic nevi and melanoma.
History of melanoma -- People who have been treated for
melanoma are at a high risk for developing a second melanoma.
Weakened immune system -- People whose immune system is
weakened by certain cancers, by drugs given following organ transplants,
or by AIDS are at increased risk of developing melanoma.
Many ordinary moles (more than 50) -- Because melanoma usually
begins in the melanocytes of an existing mole, having many moles
increases the risk of developing this disease.
(UV) radiation -- Experts believe that much of the worldwide
increase in melanoma is related to an increase in the amount of time
people spend in the sun. This disease is also more common in people who
live in areas that get large amounts of UV radiation from the sun. In
the United States, for example, melanoma is more common in Texas than it
is in Minnesota, where the sun is not as strong. UV radiation from the
sun causes premature aging of the skin and skin damage that can lead to
melanoma. (Two types of ultraviolet radiation -- UVA and UVB -- are
explained in the Dictionary.) Artificial sources of UV radiation, such
as sunlamps and tanning booths, also can cause skin damage and probably
an increased risk of melanoma.
To help prevent and reduce the risk of melanoma caused by UV
radiation, people should avoid exposure to the midday sun (from 10 a.m.
to 3 p.m.) whenever possible. Another simple rule is to protect yourself
from the sun when your shadow is shorter than you are. Wearing a hat and
long sleeves offers protection. Also, lotion, cream, or gel that
can help protect the skin. Many doctors believe sunscreens may help
prevent melanoma, especially those that reflect, absorb, and/or scatter
both types of ultraviolet radiation. Sunscreens are rated in strength
according to a sun
protection factor (SPF). The higher the SPF, the more sunburn
protection is provided. Sunscreens with an SPF value of 2 to 11 provide
minimal protection against sunburns. Sunscreens with an SPF of 12 to 29
provide moderate protection. Those with an SPF of 30 or higher provide
high protection against sunburn. Sunglasses that have UV-absorbing
lenses should also be worn. The label should specify that the lenses
block at least 99 percent of UVA and UVB radiation.
Severe, blistering sunburns -- People who have had one or more
severe, blistering sunburns as a child or teenager are at increased risk
for melanoma. Because of this, doctors advise protecting children's skin
from the sun, which they hope will help prevent, or at least reduce the
risk of, melanoma later in life. Sunburns in adulthood are also a risk
factor for melanoma.
Fair skin -- Melanoma occurs more frequently in people who
have fair skin that burns or freckles easily (these people also usually
have red or blond hair and blue eyes) than in people with dark skin.
White people get melanoma far more often than do black people, probably
because light skin is more easily damaged by the sun.
People who are concerned about melanoma should talk with their doctor
about the disease, the symptoms to watch for, and an appropriate schedule
for checkups. The doctor's advice will be based on the person's personal
and family history, medical history, and the other risk factors described
Keeping on Top of Your Condition
Keeping in tune with your disease or condition not only makes treatment less intimidating but also increases its chance of success, and has been shown to lower a patients risk of complications. As well, as an informed patient, you are better able to discuss your condition and treatment options with your physician.
A new service available to patients provides a convenient means of staying informed, and ensures that the information is both reliable and accurate. If you wish to find out more about HealthNewsflash's innovative service, take the tour.