Dermatofibroma

Dermatofibroma (also known as 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.

Causes

The exact cause of Dermatofibroma is unknown. However, it is often associated with minor injury, such as an insect bite or a prick of a thorn, that has healed.

Symptoms

Dermatofibromas are usually solitary and small (less than 1 cm in diameter), but they can also be multiple or larger. They are firm nodules that are easy to feel and are often slightly raised above the skin surface. The overlying skin is usually normal but can be hyperpigmented, particularly in dark-skinned individuals.

Diagnosis

The diagnosis of Dermatofibroma is usually made clinically, but a skin biopsy may be needed to confirm the diagnosis and to differentiate it from other skin conditions.

Treatment

Dermatofibromas are benign and do not require treatment unless they are symptomatic or the diagnosis is uncertain. If treatment is needed, the most common method is surgical excision.

See Also

• Dermatology
• Skin Biopsy
• Surgical Excision

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