Mucous cysts develop when salivary glands become plugged. They’re usually temporary, but if left untreated, they can become permanent. A mucous cyst, also known as a mucocele, is a fluid-filled ...

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, ...

Sinusitis is an inflammation, or swelling, of the tissue lining the sinuses. Sinuses make mucus, which keeps the inside of your nose moist. That, in turn, helps protect against dust, allergens, and ...

A pilonidal sinus is a small hole or tunnel in the skin that can easily become infected. It typically forms in the cleft at the top of the buttocks. When a pilonidal sinus becomes infected it can turn ...

You've got a stuffy nose, a cough, and maybe even a sore throat. It seems like a regular cold. But after several days, your symptoms aren't getting better. Can a cold turn into a sinus infection? The ...

Pilonidal cysts typically develop above the cleft of the buttocks. These swollen lumps contain hair or other debris. They occur when small holes in the skin, known as pilonidal sinuses, become ...

Sinus problems are one of the most common ailments in the United States. Specifically, acute sinusitis affects more than 30 million people yearly, and chronic sinusitis can create long-term symptoms ...

Mucus — less elegantly known as snot — may be annoying when you're sick, or when it feels like you have too much of it, but your body needs it to stay healthy. Technically, mucus is a sticky, ...

Pancreatic lymphoepithelial cysts are rare, benign cysts that are typically lined by mature, keratinizing squamous epithelium with surrounding lymphoid tissue. These cysts tend to occur in middle- to ...