Treatment of Acute Pseudogout Attack
For an acute pseudogout attack, treat with NSAIDs, corticosteroids (oral, intra-articular, or intramuscular), or low-dose colchicine, with corticosteroids being particularly useful for monoarticular or oligoarticular involvement and in patients with contraindications to NSAIDs.
First-Line Treatment Options
The management of acute pseudogout (calcium pyrophosphate deposition disease) mirrors acute gout treatment, with three primary pharmacologic options 1:
Corticosteroids (Preferred for Many Patients)
- Intra-articular injection: Particularly effective for 1-2 large joint involvement; dose varies by joint size 1
- Oral corticosteroids: Prednisolone 35 mg daily for 5 days, or prednisone 0.5 mg/kg/day for 5-10 days (either stop abruptly or taper over 7-10 days) 2, 3
- Intramuscular: Triamcinolone acetonide 60 mg as single injection 1
- Advantages: Safer profile than NSAIDs, especially effective for rapid pain control within 24 hours, well-tolerated in patients contraindicated for NSAIDs 1
NSAIDs
- Any NSAID at full anti-inflammatory doses (e.g., naproxen, indomethacin, ibuprofen) 2
- Continue at full dose until attack completely resolves 3
- Contraindications: Renal disease, heart failure, cirrhosis 2
- Adverse effects: GI bleeding, perforation, ulcers 2
Colchicine
- Dosing: 1.2 mg loading dose, followed by 0.6 mg one hour later 2, 4
- Only effective if started within 36 hours of symptom onset 3
- Contraindications: Renal or hepatic impairment with concurrent CYP3A4 or P-glycoprotein inhibitors 2
- Adverse effects: Diarrhea, nausea, vomiting, GI cramping 2
Clinical Decision Algorithm
For monoarticular or oligoarticular attacks (1-2 joints):
- First choice: Intra-articular corticosteroid injection (if large joint accessible) 1
- Alternative: Oral corticosteroids or NSAIDs
For polyarticular attacks:
- Oral corticosteroids or parenteral corticosteroids 1
- NSAIDs if no contraindications
For severe attacks:
- Consider combination therapy: colchicine + NSAIDs, or oral corticosteroids + colchicine, or intra-articular steroids with any other modality 3
Supportive Measures
Beyond pharmacotherapy, implement 4:
- Ice or cooling packs to affected joint
- Temporary joint rest with weight restriction
- Analgesic medications as needed
Key Clinical Pitfalls
Misdiagnosis as septic arthritis: Pseudogout commonly presents with fever (50% of cases), warmth, swelling, and can affect multiple joints—14 of 50 patients in one series were initially misdiagnosed as septic arthritis, with 6 undergoing unnecessary surgery 5. Always perform arthrocentesis with synovial fluid analysis to visualize rhomboid-shaped calcium pyrophosphate crystals under polarized light microscopy before assuming infection 4, 6.
Timing matters for colchicine: Unlike corticosteroids or NSAIDs, colchicine loses effectiveness if not started within 36 hours of symptom onset 3.
Drug interactions with colchicine: Avoid or reduce dose with clarithromycin, erythromycin, cyclosporine, and other potent CYP3A4 inhibitors 3.
No long-term preventive therapy: Unlike gout, there are currently no proven agents to prevent calcium pyrophosphate crystal formation or reduce crystal load 4, 7. Prophylactic low-dose colchicine (0.6 mg twice daily) may reduce recurrent attacks based on limited evidence, but requires careful consideration of side effects in elderly patients 1.
Evidence Quality Note
The primary guideline evidence comes from EULAR recommendations for calcium pyrophosphate deposition 1, which provides the most direct guidance for pseudogout management. The ACP gout guidelines 2 and ACR gout guidelines 3 address gout specifically, but the treatment principles for acute crystal-induced arthritis apply similarly to pseudogout, as confirmed by the EULAR CPPD guidelines 1.