A pilar cyst-also known as a trichilemmal cyst, an isthmus-catagen cyst, or a "wen"-forms around a hair follicle, which is why they're typically found on the scalp, according to Medical News Today .
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What's the difference between a boil and a cyst?
Medically reviewed by Susan Bard, MD Boils are painful, pus-filled, and are caused by infections like Staphylococcus aureus.Cysts are painless, non-infectious growths filled with keratin or other ...
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