A dermatofibroma is a cutaneous nodule containing macrophages or histiocytes.
Can occur at any age, more common in adults.
4F : 1M
Historically dermatofibromas have been associated with trauma or insect bites, although the cause is unknown.
Lesions occur most commonly on the lower limbs. They are solitary firm elevated nodules with pigmentation of the overlying skin. Although classically asymptomatic they may cause itching or pain.
Dermatofibromas are removed only if troublesome or if there is diagnostic uncertainty.