Picture of gout in the big toe

Gout is caused by too much uric acid in the blood (hyperuricemia). Hyperuricemia usually does no harm. But sometimes when uric acid levels in the blood are too high, uric acid forms crystals that build up in the joints. The crystals can cause a gout attack. A gout attack typically causes pain, swelling, redness, and warmth (inflammation) in a single joint, most often the big toe.

ByHealthwise Staff

Primary Medical Reviewer Anne C. Poinier, MD - Internal Medicine

Specialist Medical Reviewer Nancy Ann Shadick, MD, MPH - Internal Medicine, Rheumatology

Current as ofSeptember 9, 2014

Current as of: September 9, 2014

Author: Healthwise Staff

Medical Review: Anne C. Poinier, MD - Internal Medicine & Nancy Ann Shadick, MD, MPH - Internal Medicine, Rheumatology