Oct 4, 2024 · The cause of most pilonidal cysts is loose hairs that puncture the skin. Friction and pressure from rubbed skin, tight clothing, cycling or long periods of sitting can force hair into the skin.

Jul 6, 2020 · Pilonidal cysts are caused by a skin infection in the crease of a person's buttocks, from the bottom of the spine to the anus. Though common, cysts can rapidly get worse.

Feb 4, 2025 · What causes a pilonidal cyst? The exact cause behind the formation of a pilonidal cyst is not completely understood and is likely multifactorial. Pilonidal cysts are commonly caused by …

Mar 22, 2024 · What can trigger a pilonidal cyst? Researchers don't know every cause of a pilonidal cyst, but often it happens when an ingrown hair causes a skin infection and cyst to form.

In most cases, the cavity is filled with nests of hair – hence the name pilonidal ("pilus" meaning hair and "nidal" meaning nest). A non-inflamed lump is known as a pilonidal cyst.

Feb 1, 2026 · Usually, a pilonidal cyst starts with a hair that somehow makes its way into the skin. This hair might then embed deeper into the skin because of friction or pressure. 1 Hormones might …

Nov 14, 2025 · Pilonidal disease is a condition characterized by cysts or abscesses near the tailbone. It is often caused by hair and debris accumulation and may present with pain, swelling, and discharge.

Discover everything about pilonidal cysts, including symptoms, causes, treatment options, and home care tips. Learn how to manage and prevent this common tailbone condition.

What causes pilonidal cysts? Some people are born with a pilonidal cyst. Congenital pilonidal cysts are there from birth. The defect allows an infection to develop. For others, the infection is caused by …

Aug 18, 2025 · Pilonidal cysts usually form when hair follicles and loose hair get stuck in the skin. This might make you feel uncomfortable and could even lead to an infection.