The man's wart was caused by a rare form of tuberculosis that affects the skin. Pictured above is a computer illustration of the bacterium that causes tuberculosis. . | Credit: KATERYNA KON/SCIENCE ...

Dealing with a wart? Those unsightly tiny flesh-colored or pink bumps are generally harmless, says Dr. Nava Greenfield, a board-certified dermatologist at Schweiger Dermatology Group in New York City.

In Dr. Pimple Popper's new Instagram video, she helps a patient with a cutaneous horn or a wart jutting straight out of his arm. The growth is stiff and looks a bit like a tree stump sticking out. Dr.

Around 20% of cases of tuberculosis affect organs other than the lungs, and some can cause warty plaques on the skin. When you purchase through links on our site, we may earn an affiliate commission.