Small, firm, red or
brown scar-like bumps caused by a buildup of fibroblasts (soft tissue
cells under the skin). They often happen on the legs and may itch. They
often result from trauma, like a bug bite.
be surgically removed if they become painful or itchy.
(benign) tumor that is made up of hairs, sweat glands, and oil
(sebaceous) glands. Some internal dermoid tumors may even contain
cartilage, bone fragments, and teeth. These are rare and are usually
present at birth.
Dermoid cysts may
be surgically removed for cosmetic reasons or if they are causing a
problem, such as on an eyelid.
Darkened, flat spots
that typically appear only on sun-exposed areas of the skin. Freckles are
common in people with blond or red hair.
No treatment is
needed for freckles.
raised, fibrous growths on the skin that form in wound sites. Keloids are
more common in people with dark skin.
poorly to most treatment approaches. Injections of corticosteroid drugs
may help to flatten the keloids. Other treatment approaches may include
surgery, laser treatment, external radiation, or silicone patches to
further flatten the keloids.
Round or oval lumps,
easily movable lumps under the skin caused by fatty deposits. They tend
to appear on the forearms, torso, and back of the neck.
generally harmless. But if the lipoma changes shape, a biopsy may be
advised. Treatment may include surgical removal if the lipoma bothers the
Small skin marks
caused by pigment-producing cells in the skin. Moles can be flat or
raised, smooth or rough, and some contain hair. Most moles are dark brown
or black. Some are skin-colored or yellowish. Moles can change over time
and often respond to hormonal changes.
Most moles are
benign and no treatment is needed. Some benign moles may develop into
skin cancer (melanoma). See below for signs.
Atypical moles (dysplastic nevi)
Atypical moles are
larger than normal moles) and are not always round. Atypical moles can be
tan to dark brown, on a pink background. These types of moles may happen
anywhere on the body.
include removal of any atypical mole that changes in color, shape, or
diameter. People with atypical moles should avoid sun exposure, since
sunlight may accelerate changes in atypical moles. People with atypical
moles should talk with a healthcare provider about any changes that may
indicate skin cancer.
Red, brown, or
bluish-black, raised marks caused by excessive growth of capillaries
(small blood vessels). Pyogenic granulomas usually form after an injury
to the skin.
They tend to bleed
granulomas disappear without treatment. Sometimes, a biopsy is needed to
rule out cancer. Treatment may include surgical removal.
Also called epidermal inclusion cysts, these are
common benign lumps. They usually don't cause discomfort unless they
become inflamed or infected. They range from a half inch to greater in
size and are common on the back, head, and neck. They are firm and
contain a white substance.
Treatment to remove the cyst is not needed unless the
cyst becomes inflamed, or if its location is a problem. Epidermoid cysts
sometimes go away without treatment but may return.