Mark Gurarie is a writer covering health topics, technology, music, books, and culture. He also teaches health science and research writing at George Washington University's School of Medical and ...

Cellulitis is a bacterial skin infection that often affects the legs and feet. A person may develop cellulitis in the toenails due to another infection, such as athlete’s foot, or as a symptom of an ...

A fungal skin infection occurs when a fungus (such as yeast or mold) grows and creates a reaction on your skin surface. Fungi (the plural of “fungus”) spread by releasing particles called spores into ...