In the head, they have a predilection for the orbit and scalp. "The 'marbles' are spherical aggregates of keratin, fat, sebaceous material, fibrin, and hair floating within the fluid matrix of the ...
Consult a doctor if you have a lump growth on your back, neck, or face. The medical expert will check the area to determine whether it is a sebaceous or epidermoid cyst. Other types include pilar, ...