After spending years on a "carnivore diet," a man from Tampa, Florida, developed yellowish nodules on his hands, elbows ... had begun to seep out of his skin. According to a new case report ...

Finding a lump under your skin can be alarming, but most of the time, it’s harmless. If it’s a cyst, it is a small sac filled with air, fluid, or other material. A tumor refers to any unusual ...