Medically reviewed by William Truswell, MD An ingrown hair cyst looks like a small red bump and often causes no pain.You can ...

Ingrown hair cysts can usually be treated at home. Taking steps like stopping shaving, keeping the area clean, and applying ...

Skin cysts, or sebaceous cysts, are slightly hardened, fluid-filled bumps under the skin. When a person feels them, they are moveable. They often affect the face, neck, and torso. The term “sebaceous ...

Ovarian cysts are very common in people who menstruate, with an estimated 10% to 30% of women — and potentially more — developing at least one in their lifetime. These fluid-filled sacs develop in or ...

Incomplete sealing of the urachus — a line of connectivity between a fetus and the umbilical cord — can cause a urachal cyst to develop. It can lead to abdominal pain and other symptoms and often ...

Arachnoid cysts are benign, cerebrospinal fluid-filled sacs that typically arise from developmental anomalies in the arachnoid membrane. Although often discovered incidentally, these lesions can ...

Colleen Murphy is a senior editor at Health. She has extensive experience with interviewing healthcare providers, deciphering medical research, and writing and editing health articles in an ...