Seborrheic keratoses tend to do the following:
- Start as small, rough bumps, then slowly thicken and develop a warty surface
- Have a waxy, stuck-on-the-skin look
- Be brown, though they range in color from white to black
- Range in size from a fraction of an inch to larger than a half-dollar
- Form on the chest, back, stomach, scalp, face, neck, or other parts of the body (but not on the palms and soles)
- Cause no pain — some itch
In most people, seborrheic keratoses first appear in middle age or later. People who are most likely to get these growths have family members with seborrheic keratoses. Sometimes the growths appear during pregnancy or after estrogen replacement therapy. Children rarely have these growths.
Causes of Seborrheic Keratosis
The cause of seborrheic keratoses is unknown. We do know the following:
- Seborrheic keratoses seem to run in families. Some people seem to inherit a tendency to get many of these growths.
- Some studies suggest that sun exposure may play a role. But we know that these growths appear on skin that gets sun and skin that is always covered. So more research is needed.
- Seborrheic keratoses are not contagious. These growths may seem to multiply and spread to other parts of the body. The truth is, this does not happen.
Treatments for Seborrheic Keratosis
Because seborrheic keratoses are harmless, they most often do not need treatment. A dermatologist may remove a seborrheic keratosis when it is:
- Hard to distinguish from skin cancer
- Large or gets easily irritated when clothes or jewelry rubs against it
- Unsightly to a patient
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OTHER Skin Conditions
Acne is the most common skin condition in the United States. Although it’s common, accurate information about acne can be scarce.
An acne cyst forms when the pore fills with dead skin cells oil, and bacteria. A cyst goes deep into the skin and can hurt.
An actinic keratosis or AK is a rough, dry, scaly patch or growth that forms on the skin. An AK forms when the skin is badly damaged by ultraviolet (UV) rays from the sun or indoor tanning.
Alopecia (Hair Loss)
Millions of people experience hair loss. Some people see their hair re-grow without doing anything. Others need treatment for their hair to re-grow. Sometimes, hair will not re-grow.
This is a common skin disease in children. Children often get atopic dermatitis (AD) during their first year of life. If a child gets AD during this time, dry and scaly patches appear on the skin.
Atypical Mole (Dysplastic)
This type of mole can look like melanoma. It is not melanoma. But you have a higher risk of getting melanoma if you have certain risk factors.
Basal Cell Carcinoma
Basal cell carcinoma (BCC) is the most common form of skin cancer. More than two million cases of this skin cancer are diagnosed in the United States each year.
Bedbugs are tiny insects that feed on human blood. They hide in dark places close to where humans sleep and usually crawl out to feed while people are fast asleep.
Dry skin is common. It can occur at any age and for many reasons. Using a moisturizer often helps repair dry skin.
Eczema is a word that means irritated skin. Doctors don’t really know why some kids and adults get eczema, and others don’t. They think it might happen for a variety of reasons.
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