M71.031

Clinical Causes: Bacterial infection, often from bacteria such as Staphylococcus aureus, entering through a skin wound or puncture near the wrist. Continuous or repetitive wrist movements that cause inflammation and make the bursa more vulnerable to infection. Trauma or injury to the wrist that breaches the protective tissue layers, providing an entry point for bacteria. Underlying skin infections or abscesses nearby that spread to the bursa. Pre-existing conditions like rheumatoid arthritis or gout that predispose the joint to inflammation and infection.

Key Symptoms: Localized swelling around the wrist that may be tender to touch. Pain or discomfort, especially during wrist movement. Redness or warmth over the affected area indicating inflammation. Limited range of motion due to swelling or pain. Possible fever or chills if the infection becomes systemic. Fluid-filled lump that may feel soft or fluctuant upon palpation.

Diagnosis Path: Physical examination focusing on swelling, tenderness, and range of motion. Imaging tests such as ultrasound to visualize fluid collection within the bursa. Aspiration of the bursa fluid for laboratory analysis to identify the infectious organism. Blood tests to identify signs of systemic infection or inflammation. Potentially, magnetic resonance imaging (MRI) for detailed tissue assessment if diagnosis remains uncertain.

Treatment Protocols: Antibiotic therapy tailored to the suspected or confirmed pathogen, often administered orally or intravenously depending on severity. Drainage of the abscess through a procedure called needle aspiration or surgical incision and drainage to remove pus and reduce pressure. Rest and immobilization of the wrist to promote healing and prevent further injury. Pain management with medications such as NSAIDs or acetaminophen. Addressing any underlying conditions that may predispose to infection, like managing autoimmune disorders. Follow-up care to monitor healing and prevent recurrence, including physical therapy if necessary.