Patient presents with symptoms consistent with wrist tendonitis, also known as de Quervain's tenosynovitis or tenosynovitis of the wrist.  Onset of pain and swelling in the wrist, specifically the radial side, was reported as [onset timeframe - e.g., gradual over several weeks, acute after specific activity].  Patient reports [character of pain - e.g., aching, sharp, burning] pain exacerbated by [movements or activities - e.g., gripping, lifting, twisting].  Pain level reported as [pain scale rating - e.g., 4/10 on visual analog scale].  Physical examination reveals [objective findings - e.g., tenderness to palpation over the first dorsal compartment, positive Finkelstein's test, limited range of motion].  Differential diagnoses considered include carpal tunnel syndrome, arthritis, and ganglion cyst.  Assessment:  Wrist tendonitis, right/left wrist.  Plan:  Conservative management initiated, including rest, ice, compression, and elevation (RICE).  Patient education provided on activity modification and ergonomic adjustments.  NSAIDs prescribed for pain and inflammation management.  Referral to occupational therapy for splinting and hand exercises will be considered if symptoms persist.  Follow-up appointment scheduled in [timeframe - e.g., two weeks] to assess response to treatment.  ICD-10 code: M65.4.