Immediate Evaluation for Gout or Infection Required
This 87-year-old woman with erythema and tenderness of the great toe needs urgent evaluation to distinguish between acute gout (most likely given the classic presentation) and infection (cellulitis or septic arthritis), as both require immediate but different treatments, and her RA medications may mask infection severity.
Clinical Approach
First Priority: Rule Out Infection
- Examine for systemic signs: fever, warmth extending beyond the toe, lymphangitis, or purulent drainage
- Check inflammatory markers: WBC, CRP, ESR (though these may be elevated from RA itself)
- Consider joint aspiration if there's any suspicion of septic arthritis, especially given her immunosuppressed state from RA treatment
- Elderly RA patients on immunosuppressants are at significantly elevated risk for serious infections including necrotizing fasciitis 1
Most Likely Diagnosis: Acute Gout
The classic presentation of erythema and tenderness at the great toe tip (first metatarsophalangeal joint) strongly suggests acute gout, which occurs with increased frequency in RA patients due to:
- Chronic inflammation
- Decreased mobility (as in this patient)
- Potential diuretic use
- Renal impairment from NSAIDs or disease
Treatment Algorithm
If Infection is Ruled Out (Presumed Gout):
Avoid NSAIDs given her age (87) and likely comorbidities
First-line treatment options:
- Colchicine: Low-dose (0.6 mg once or twice daily) - preferred in elderly due to lower toxicity risk, though reduce dose if renal impairment present
- Intra-articular glucocorticoid injection: Highly effective for monoarticular flares and strongly recommended 2
- Short course of oral glucocorticoids: Prednisone 20-30 mg daily for 5-7 days with rapid taper - acceptable given the recommendation to use glucocorticoids for short-term symptom control while limiting duration 2
Critical Considerations for Her RA Management:
Do not stop her DMARDs during acute gout treatment unless infection is confirmed. Current guidelines emphasize that glucocorticoids should only be used when initiating or changing DMARDs, with rapid discontinuation 2, but a brief course for acute gout is distinct from chronic RA management.
If Infection is Present:
- Immediate empiric antibiotics covering Staphylococcus aureus (most common in RA patients 1)
- Surgical consultation if necrotizing infection suspected
- Temporarily hold immunosuppressive DMARDs until infection controlled
Addressing Her Mobility Issues
Her decreased ambulation likely contributes to both gout risk and foot problems. Foot care by trained nurses has demonstrated significant pain relief and improved general health in RA patients 3, though it won't improve physical functioning or footwear issues. Consider:
- Proper footwear evaluation
- Orthotic consultation
- Physical therapy once acute inflammation resolves
Common Pitfalls to Avoid:
- Don't assume all toe inflammation in RA is from the underlying disease - gout and infection are common mimics
- Don't use chronic glucocorticoids - the toxicity outweighs benefits 2
- Don't delay infection workup in immunosuppressed elderly patients - mortality is high with necrotizing infections 1
- Don't prescribe NSAIDs in an 87-year-old without careful consideration of renal function, cardiovascular risk, and GI protection