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Approach the Joint Pain followed by febrile illness - Coggle Diagram
Approach the Joint Pain followed by febrile illness
Step1: Patient History;
Fever (duration, resolution, associated symptoms).
Pain characteristics (onset, type: inflammatory vs. non-inflammatory, migratory vs. persistent).
Associated systemic features: rash, fatigue, weight loss.
Past medical history: autoimmune diseases, infections, trauma.
Travel or exposure to endemic areas.
Medications used for fever (e.g., paracetamol).
Step 2: Physical Examination
look for
Signs of Inflammation: Warmth, swelling, erythema, tenderness.
Symmetry of Joints Involved: Symmetric (RA, SLE) vs. asymmetric (reactive arthritis, gout).
Pattern of Joint Involvement:
Small joints → RA, SLE
Large joints → Post-infectious arthritis, septic arthritis
Axial joints → Ankylosing spondylitis, psoriatic arthritis
Extra-Articular Features:
Skin: Rashes (malar in SLE, psoriasis).
Eyes: Conjunctivitis, uveitis (reactive arthritis).
Mouth ulcers (SLE).
Step 4: Investigations
Basic Labs: CBC, ESR/CRP (inflammatory markers).
Liver and kidney function tests.
Disease-Specific Tests
Post-Infectious Arthritis: Viral serologies (chikungunya, dengue).
Autoimmune Diseases: RF, anti-CCP, ANA, dsDNA.
Infectious Arthritis: Blood cultures, ASO titers.
Joint Fluid Analysis: Cell count, Gram stain, crystal analysis.
Imaging:X-rays (erosions in RA, calcifications in pseudogout).
Ultrasound or MRI: Consider if further soft tissue or inflammatory assessment is needed.
Step 3: Categorize Based on Involvement
Inflammatory Arthritis:
Morning stiffness >1 hour, systemic symptoms.
Non-Inflammatory Arthritis:
Pain worsens with activity, no systemic features.
Step 5: Differential Diagnosis
Post-Infectious Arthritis: Viral arthritis (e.g., chikungunya, parvovirus B19).
Autoimmune Disorders:
Rheumatoid arthritis (symmetrical, small joints).
Systemic lupus erythematosus (polyarthritis + rash).
Reactive Arthritis:Asymmetric, large joint involvement after GI/GU infections.
Crystal Arthropathy:Gout (uric acid crystals), pseudogout (calcium pyrophosphate crystals).
Septic Arthritis:Monoarthritis with systemic symptoms (emergency!).
Step 6: Treatment
Pharmacological Management
:
Nonsteroidal Anti-Inflammatory Drugs (NSAIDs): For pain and inflammation control.
Analgesics: Paracetamol for mild to moderate pain. Corticosteroids: Consider short courses for severe inflammation, especially in RA or SLE flares. Disease-Modifying Antirheumatic Drugs (DMARDs): Initiate in confirmed cases of RA or SLE.
Non-Pharmacological Measures:
Rest: Avoid overusing inflamed joints.
Physical Therapy: Gradual mobility exercises after the acute phase. Cold Packs: To reduce inflammation during the acute phase.
Dietary Changes: Low-purine diet in gout; general healthy diet in other cases.
When to Refer
Suspected Autoimmune Diseases (RA or SLE), Septic Arthritis, Uncontrolled Symptoms and Uncertain Diagnosis.
Step 7 ; Follow-Up and Monitoring: Reassess symptoms in 1–2 weeks. Monitor for chronic disease progression (e.g., RA, SLE).
References:
https://my.clevelandclinic.org/health/diseases/23979-viral-arthritis
https://www.aafp.org/pubs/afp/issues/2018/0415/p517.html
https://www.betterhealth.vic.gov.au/health/conditionsandtreatments/reactive-arthritis
https://www.aafp.org/pubs/afp/issues/2003/0915/p1151.html
https://www.mayoclinic.org/diseases-conditions/rheumatic-fever/symptoms-causes/syc-20354588