M02.349

Clinical Causes: Infection: Often triggered by bacterial infections, particularly in the gastrointestinal or urinary tract, such as Chlamydia, Salmonella, Shigella, or Yersinia. Genetic predisposition: Certain genes, like HLA-B27, may increase the risk of developing reactive arthritis. Environmental factors: Stress, injury, or other environmental triggers may contribute to disease onset in susceptible individuals.

Key Symptoms: Joint inflammation: Swelling, redness, warmth, and pain in the affected hand joints. Stiffness: Reduced flexibility and difficulty moving fingers or hand muscles. Skin changes: Occasionally, skin rashes or lesions may appear near affected joints. Eye irritation: Redness and discomfort in the eyes, such as conjunctivitis, can occur alongside hand symptoms. Urinary or genital symptoms: Mild discomfort or symptoms related to urinary or genital systems may be present.

Diagnosis Path: - Medical history review: Discussing recent infections or symptoms and family history. - Physical examination: Checking for signs of joint swelling and skin or eye changes. - Laboratory tests: Blood tests to detect inflammation markers, HLA-B27 gene presence, and tests for infectious agents. - Imaging studies: X-rays or ultrasound of the hand to assess joint damage or inflammation. - Rule-out other conditions: Ensuring symptoms are not due to other types of arthritis or skin diseases.

Treatment Protocols: - Nonsteroidal anti-inflammatory drugs (NSAIDs): For pain relief and reducing inflammation. - Physical therapy: Exercises to preserve joint movement and strengthen hand muscles. - Corticosteroid injections: In cases of persistent or severe inflammation. - Antibiotics: If an ongoing bacterial infection is identified, targeted antimicrobial therapy may be necessary. - Rest and activity modification: Limiting activities that exacerbate symptoms to facilitate healing. - Monitoring and follow-up: Regular check-ups to assess disease progression and adjust treatments.