Doctor can check
A primary care doctor, dermatologist, plastic surgeon, or general surgeon
can evaluate to see if this is a epidermal inclusion cyst or something else, such as a lipoma
A cyst might happen when a skin pore is blocked, and dead skin cells build up under the skin, forming a lump. Usually, one starts with a primary care doctor, who can refer to a specialist if needed, or if the lump looks worrisome.