Rheumatoid Arthritis

General Medicine

Chronic autoimmune symmetrical polyarthritis with synovitis; high risk of joint damage and CVD.

History taking

  • • Symmetrical small-joint pain + stiffness >1 h morning
  • • Fatigue, weight loss
  • • Family history autoimmune

Examination

  • • MCP/PIP/wrist synovitis
  • • Boutonnière, swan-neck, ulnar deviation late
  • • Rheumatoid nodules

Red flags

  • • Atlanto-axial subluxation
  • • Vasculitis, scleritis, ILD

Differential diagnosis

  • • See differentials section per chief complaint

Recommended investigations

  • • RF, anti-CCP
  • • ESR, CRP
  • • X-ray hands/feet (erosions)
  • • CBC, LFT, RFT pre-DMARDs

Diagnosis

  • • ACR/EULAR 2010 score ≥6

Initial treatment / management

  • • Early DMARD (treat to target)
  • • Bridge with NSAID/steroid

Drug therapy

  • • Methotrexate 7.5–25 mg PO weekly + folic acid 5 mg weekly (different day)
  • • Hydroxychloroquine 200 mg BD adjunct
  • • Sulfasalazine 1 g BD
  • • Biologic (TNFi) if inadequate response

Follow-up advice

  • • DAS28 monthly until remission
  • • Monitor LFT, CBC on MTX 4–12 weekly

Patient counselling

  • • Smoking cessation (reduces severity, improves drug response)
  • • Vaccination before biologics

Referral criteria

  • • Rheumatology within 6 weeks of suspected RA

Clinical pearls

  • • Window of opportunity: DMARD within 3 months changes prognosis

References

  • • Harrison's Principles of Internal Medicine, 21e
  • • NICE / WHO guidelines (current edition)

Educational outpatient guide — verify against local guidelines before clinical use.

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