Interdigital cysts are firm, raised subcutaneous inflammatory lesions found in and on the interdigital webs of the paw. The cause is usually a traumatically ruptured hair follicle. The surrounding ...

A carpal boss is a small, hard lump that develops on the back of your hand or near your wrist. Doctors also refer to a carpal boss as “carpal bossing” or a “carpometacarpal boss.” The lump isn’t ...

Katlein Franca, MD, is a dermatologist and clinical associate professor of Dermatology & Cutaneous Surgery and Psychiatry & Behavioral Sciences at the University of Miami. Boils start as tender bumps ...

Marisa Garshick, MD, FAAD, is a board-certified dermatologist and clinical assistant professor of dermatology. Skin lesions can be primary (present from birth or develop later in life) or secondary ...