Dermatofibromas is caused by an overgrowth of a mixture of different cell types in the dermis layer of the skin.
The reasons why this overgrowth occurs aren't known.
The growths often develop after some type of small trauma to the skin, including a puncture from a splinter or bug bite.
Dermatofibroma (superficial benign fibrous histiocytoma) is a common cutaneous nodule of unknown etiology that occurs more often in women.
Dermatofibroma frequently develops on the extremities (mostly the lower legs) and is usually asymptomatic, although pruritus and tenderness can be present.
A dermatofibroma is a common overgrowth of the fibrous tissue situated in the dermis (the deeper of the two main layers of the skin).
It is benign (harmless) and will not turn into a cancer.
Dermatofibromas are firm and may be black, red, brown, or flesh-colored.
heir diameter generally ranges from 0.5 to l. 5 cm, although they may occasionally be larger.
Dermatofibromas may be solitary or multiple, and they develop either spontaneously or after minor trauma to the skin, such as an insect bite.
If you pinch a dermatofibroma, it creates a dimple because it is attached to the underlying subcutaneous tissue.
On the other hand, if you pinch a mole, it projects up away from the skin.
Moles appear when skin cells grow in clusters.
Dermatofibromas do not go away by themselves.
However, as they are harmless and do not turn into cancer, no treatment is usually needed.
They can be removed under local anaesthetic if there is doubt about their diagnosis.
However, removal will always cause a scar.