M02.111

Clinical Causes: Previous bacterial infections, most notably dysentery caused by bacteria like Shigella, Salmonella, or Campylobacter. Genetic predispositions, such as carrying the HLA-B27 gene, which may increase susceptibility. Environmental factors and immune system responses that trigger joint inflammation following infection.

Key Symptoms: Pain in the right shoulder that may be constant or intermittent. Swelling, warmth, and redness around the shoulder joint. Reduced range of motion, making it difficult to move the arm freely. Persistent stiffness, especially after periods of rest or inactivity. Possible associated symptoms of infection, such as fever, fatigue, or malaise.

Diagnosis Path: Diagnosis involves a combination of medical history, physical examination, and laboratory tests. Key steps include: - Reviewing recent infections, particularly gastrointestinal symptoms. - Physical exam to assess joint inflammation, swelling, and movement restrictions. - Blood tests to detect inflammatory markers like ESR or CRP. - Serologic tests to identify past bacterial infections. - Imaging studies, such as X-rays or MRI, to evaluate joint damage and exclude other causes. - Synovial fluid analysis, if necessary, to rule out septic arthritis.

Treatment Protocols: Management focuses on alleviating symptoms and reducing inflammation: - Nonsteroidal anti-inflammatory drugs (NSAIDs) to control pain and swelling. - Physical therapy to maintain joint function and strengthen surrounding muscles. - Rest and joint protection strategies to minimize strain. - In some cases, corticosteroid injections may be recommended for persistent inflammation. - Addressing the underlying infection and preventing future episodes through good hygiene and medical care. - Monitoring for any signs of progressing joint damage or complications.