Dermatofibroma Risk and Prevention

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Dermatofibroma Risk and Prevention

Question:

I just had a spot removed on my leg by a dermatologist. It was a dermatofibroma. I have read that these can be hereditary. My daughter tans in a tanning bed quit often. Is she at higher risk of developing dermatofibromas? I was told not to use a tanning bed again and to be careful out in the sun. What happens if I do get to much sun? Am I at greater risk of developing more dermatofibromas or any type of cancer?

Answer:

A dermatofibroma is a common noncancerous (benign) growth that often develops on the legs and arms. Dermatofibromas occur on women more often than men. They usually produce no symptoms, although a common complaint by women is that they nick these growths while shaving their legs.

The cause of these growths is unknown. Some people mention a history of mild trauma, such as a mosquito bite. Dermatofibromas are not known to be inherited.

While these growths are not associated with sun exposure or skin cancer, there are good reasons to limit sun exposure. It increases the risk of developing skin cancers such as basal cell carcinoma, squamous cell carcinoma and melanoma.

Rebecca Campen, M.D., J.D. is an Assistant Professor of Dermatology at Harvard Medical School. She divides her time between clinical practice of dermatology at the Massachusetts General Hospital and private practice in Savannah, Ga.

Last updated:	July 20, 2009