A member asked:

Sore knot or lump underneath skin on top of the forearm?

A doctor has provided 1 answer
Dr. Alvin Lin answered

Abscess vs cyst vs ?: Lipoma is benign lump of soft tissue under skin that doesn't hurt. Cyst is a collection of fluid or oil that shouldn't hurt unless it gets infected. Abscess is a collection of pus that can be quite painful. Hair follicle could get infected & swollen. Best to go see your family doc for evaluation, diagnosis & treatment.

Answered 8/7/2017

5.4k views

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