- Crystals:
- Gout = NEGATIVELY birefringent (uric acid)
- Pseudogout = POSITIVELY birefringent (calcium pyrophosphate)
- Treatment:
- Gout:
- Acute attack: 1st line NSAID's except aspirin; 2nd line COLCHICINE
- Chronic: URICOSURICO agents (Never use in acute crisis)
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