Cysts are small sacs filled with fluid, air or skin cells that can pop up just about anywhere.

DEAR DR. ROACH: I’m 80 and in very good physical shape. I walk 10-20 miles or more on hiking trails weekly, even though I have a pacemaker. I fell down our stairs hauling boxes and hurt my knee. I ...

Now, in her latest Instagram video, dermatologist Sandra Lee, MD goes after a huge cyst on a woman's back-and she's not afraid to make a few puns about it. "I got yo back #cysta ," Dr. Pimple Popper ...