A pilonidal sinus is a small hole or tunnel in the skin that can easily become infected. It typically forms in the cleft at ...

Dentigerous cysts occur when a tooth that has not erupted is covered by a fluid-filled sac. Learn about the causes, symptoms, treatment, and more.

Medically reviewed by Susan Bard, MD Boils and cysts are two types of growths on the body. Also known as furuncles, boils are ...

She wrote, "A cyst can become inflamed if the sac wall ruptures under skin, most likely from trauma." If you're more an Instagram fan, Dr. Pimple Popper shared a clip there as well.

An epidermoid cyst and the area around it sometimes become inflamed. This can cause pain, swelling, and skin redness and other color changes. Some people try to pop these cysts to reduce discomfort.

The Baker’s cyst or popliteal cyst occurs when there is too much synovial fluid within the knee as a result of increased inflammation in the knee. This fluid fills a water-filled sack in the ...

A bump recently appeared above my wife’s eye, near the edge of her eyebrow. It grew inflamed and painful, which led to a course of antibiotics. And although the pain and some of the swelling and ...

Dr. Pimple Popper tackles a massive chin cyst in her new YouTube video. The giant cyst also happens to be inflamed. Lee squeezes out an unbelievable amount of pus before snipping out the sac and ...

Dr. Sandra Lee, better known as Dr. Pimple Popper, drained a woman's epidermoid back cyst that had become inflamed and turned purple because it ruptured under her skin.

A lump can be alarming, especially if it is not within sight. However, many different conditions can cause a swollen lump on the back of the neck, including benign causes such as acne and irritation.