Keratoacanthoma (KA) is an epidermal tumor believed to arise from hair follicles and pilosebaceous units. There is an ongoing controversy as to whether KA should be classified as a benign or a ...

A pimple inside your nose usually isn't serious and can be treated at home. An inflamed hair follicle is a common cause of a pimple in the nose. Avoid picking your nose to reduce the chances of ...