Cyst
A cyst is a closed sac under the skin that fills with fluid, pus, or other material. Cysts are usually slow-growing, painless, and feel like a smooth, firm lump. Common types include epidermoid cysts and pilar cysts. They can form from clogged hair follicles or skin trauma. While most cysts are harmless, they can sometimes become red, swollen, or infected. Treatment often involves draining or surgically removing the cyst if it causes discomfort or keeps growing.
Frequently Asked Questions
A cyst is a sac-like bump under the skin filled with fluid, pus, or other material. Most cysts are harmless.
Signs include a round, smooth lump under the skin that can move slightly when touched. It may become swollen, tender, or red if it gets infected.
Small, painless cysts may not need treatment. If needed, a cyst can be drained or removed with a minor surgical procedure in the office.
