Tonsil cysts typically don’t cause any noticeable symptoms. If you suspect you have one, it may be something else, like a tonsil stone or an abscess. Share on Pinterest Tonsil cysts have long been ...

What Is a Dentigerous Cyst? A dentigerous cyst, also called a follicular cyst, is the second most common type of jaw (odontogenic) cyst. It's a fluid-filled sac that develops in your jawbone over a ...

Medically reviewed by Susan Bard, MD Boils are painful, pus-filled, and are caused by infections like Staphylococcus ...

Bartholin cysts are common fluid-filled lumps that form near the opening of your vagina. When infected, they can become abscesses, which can have more severe symptoms and require different treatments.

A urachal cyst is a sac of tissue and fluid between the bladder and the belly button, which can sometimes cause discomfort or symptoms if it drains. An infected urachal cyst can pierce the bladder or ...

A thyroglossal duct is a cyst or lump that develops in your neck or near your thyroid glands. It develops in the womb before birth and is usually diagnosed shortly after birth or during childhood. A ...

A branchial cleft cyst is a birth abnormality that occurs on one or both sides of the neck. This atypical tissue may form fluid-filled sacs or passages that drain fluid on the neck surface. These ...

Ovarian cysts are common in females of reproductive age. Most of them are harmless, but some may rupture. A sudden, sharp pain in the lower abdomen, with nausea and vomiting in some cases, can ...

A photo of a cyst nematode's head viewed through a high-power microscope shows its esophageal glands, which produce effectors it uses to infect host plants. The image was digitally edited to highlight ...