A pea-sized lump in your neck is usually a swollen lymph node. It’s often a sign you’re fighting an infection or a result of an insect bite or sting. The appearance of a pea-sized lump in your neck ...

Pilonidal sinus—also called a pilonidal cyst—is a skin infection that occurs in or around the crease of your buttocks. This condition happens when hair, skin cells, and dirt clog a hair follicle, ...

Q: What is a Baker’s cyst, and what is the best way to get rid of it? A: A Baker’s cyst is a collection of fluid behind the knee. It was named after a British surgeon, William Baker, who described ...

Pain in the back of the knee when straightening the leg is called posterior knee pain. Finding the cause can be difficult as it can come from problems with the bones, muscles, tendons, ligaments, ...

A lump under your jaw could be a swollen lymph node, or it could also be another health condition that warrants investigation, such as a growth or cyst. A lump on your jawline that is soft and can be ...