How Pimples Form

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Pimple forming in a hair shaft

Pimples form when dead skin cells mix with excess oil (sebum). This mixture plugs the pore, causing swelling. Bacteria can grow in the mix and lead to infection and pus.

ByHealthwise Staff

Primary Medical Reviewer Kathleen Romito, MD - Family Medicine

Specialist Medical Reviewer E. Gregory Thompson, MD - Internal Medicine

Current as ofFebruary 20, 2015

Current as of: February 20, 2015

Author: Healthwise Staff

Medical Review: Kathleen Romito, MD - Family Medicine & E. Gregory Thompson, MD - Internal Medicine