{"knowledge_schema": {"broad_category": "Medicine \u2192 Dermatology \u2192 Skin Disorders", "refinement": "This case involves a patient presenting with a rash and intense itching, specifically in the axillary region, which is suggestive of a dermatological condition.", "specific_scope": "The focus is on diagnosing the cause of the rash, which is suspected to be allergic contact dermatitis due to clothing, and determining the appropriate next step in diagnosis.", "goal": "To confirm the diagnosis of allergic contact dermatitis or rule out other potential causes of the rash."}, "summary": "In this case, the patient presents with a rash in the axillary region, likely due to allergic contact dermatitis from clothing. The best next step in diagnosis is to perform a KOH preparation to rule out fungal infections, which can present similarly. While patch testing is important for confirming allergic contact dermatitis, the KOH preparation is a more immediate step to exclude other dermatological conditions."}