Master Specialist Rheumatology (RHU5501)
for DHA Speciality

Core Concepts

Rheumatology focuses on inflammatory, autoimmune, and degenerative conditions affecting joints, muscles, bones, and connective tissues. Key principles include the role of immune dysregulation (e.g., T-cell, B-cell activation, cytokine storms) leading to chronic inflammation, tissue damage, and systemic manifestations. Common conditions include Rheumatoid Arthritis (RA), Spondyloarthropathies (e.g., Ankylosing Spondylitis, Psoriatic Arthritis), Systemic Lupus Erythematosus (SLE), Systemic Sclerosis (SSc), Myositis, Vasculitis, Gout, Osteoarthritis (OA), and Osteoporosis. Understanding the interplay of genetic predisposition and environmental triggers is crucial. Management aims for early diagnosis, disease modification, symptom control, prevention of structural damage, and improvement of quality of life.

Clinical Presentation

• Joint Pain: Inflammatory (morning stiffness >30min, improves with activity, symmetric) vs. Mechanical (worsens with activity, short morning stiffness, asymmetric).
• Stiffness: Predominantly morning stiffness, can be generalized or localized.
• Swelling, Warmth, Redness: Cardinal signs of inflammation.
• Fatigue & Malaise: Common systemic symptoms in inflammatory conditions.
• Extra-Articular Manifestations: Highly diverse and crucial for diagnosis.
  • Skin: Rashes (malar, discoid, psoriasis), photosensitivity, livedo reticularis, sclerodactyly, Raynaud's phenomenon, digital ulcers.
  • Ocular: Uveitis, episcleritis, sicca symptoms.
  • Renal: Proteinuria, hematuria, impaired kidney function (e.g., lupus nephritis).
  • Pulmonary: Interstitial lung disease, pleurisy, pulmonary hypertension.
  • Cardiac: Pericarditis, myocarditis, vasculitis.
  • Neurological: Seizures, psychosis, neuropathy.
  • GI: Oral ulcers, dysphagia, inflammatory bowel disease, malabsorption.
  • Constitutional: Fever, weight loss, lymphadenopathy.
• Specific patterns: Symmetrical polyarthritis (RA), axial pain + enthesitis (SpA), multi-systemic (SLE), acute monoarthritis (Gout, septic).

Diagnosis (Gold Standard)

Diagnosis relies on a comprehensive approach:

• Clinical History & Physical Examination: The cornerstone. Detailed joint assessment, systemic review, and functional evaluation.
• Laboratory Tests:
  • Inflammatory Markers: ESR, CRP (elevated in inflammatory conditions).
  • Autoantibodies:
    • RF, anti-CCP (Rheumatoid Arthritis)
    • ANA, anti-dsDNA, anti-Sm, anti-Ro/La (Systemic Lupus Erythematosus)
    • ANCA (Vasculitis - PR3, MPO)
    • Anti-Scl-70, anti-centromere (Systemic Sclerosis)
    • Anti-Jo-1, CK (Myositis)
    • HLA-B27 (Spondyloarthropathies)
  • Metabolic: Serum Uric Acid (Gout - but may be normal during acute flare).
  • Other: Complement levels (C3, C4 in SLE), renal function tests, urinalysis.
• Imaging:
  • X-rays: Erosions, joint space narrowing, sacroiliitis, chondrocalcinosis, osteopenia.
  • MRI: Early inflammatory changes (synovitis, bone marrow edema, sacroiliitis), soft tissue involvement.
  • Ultrasound: Synovitis, enthesitis, erosions, crystal deposition.
  • CT: Detailed bone imaging (e.g., sacroiliac joints), interstitial lung disease.
• Synovial Fluid Analysis: Essential for acute monoarthritis. Cell count, differential, Gram stain, culture, crystal analysis (urate crystals for gout, calcium pyrophosphate for pseudogout).
• Biopsy: Skin, muscle, kidney, nerve, temporal artery (Giant Cell Arteritis) for specific diagnoses.

Management (First Line)

Management is often multidisciplinary, aiming to achieve remission or low disease activity, prevent damage, and improve function.

• Symptomatic Relief:
  • NSAIDs: For pain and inflammation (monitor GI, renal, CV risk).
  • Corticosteroids: Bridging therapy for flares, high doses for severe systemic disease (e.g., vasculitis, lupus nephritis).
  • Analgesics: Paracetamol, opioids (judiciously).
• Disease-Modifying Anti-Rheumatic Drugs (DMARDs):
  • Conventional Synthetic (csDMARDs): Methotrexate (first-line for RA), Sulfasalazine, Hydroxychloroquine, Leflunomide.
  • Biologics (bDMARDs): TNF-alpha inhibitors (e.g., Adalimumab, Etanercept), IL-6 inhibitors (Tocilizumab), B-cell depleting agents (Rituximab), T-cell costimulation modulators (Abatacept). Used for moderate-severe disease failing csDMARDs.
  • Targeted Synthetic (tsDMARDs): JAK inhibitors (e.g., Tofacitinib, Baricitinib).
• Specific Therapies:
  • Gout: Colchicine, NSAIDs, steroids for acute attacks. Urate-lowering therapy (ULT) like Allopurinol, Febuxostat for chronic management.
  • Osteoporosis: Calcium & Vitamin D, Bisphosphonates (Alendronate), Denosumab, Teriparatide.
  • Systemic Sclerosis: Immunosuppressants, vasodilators (Raynaud's), proton pump inhibitors (GI).
  • Vasculitis: High-dose steroids, cyclophosphamide, rituximab.
• Non-Pharmacological: Physiotherapy, occupational therapy, exercise, lifestyle modifications, patient education, psychological support.

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