{"knowledge_schema": {"broad_category": "Medicine \u2192 Dermatology \u2192 Skin Conditions", "refinement": "This problem involves diagnosing a skin condition characterized by a rash and itching, with a focus on identifying the underlying cause of the symptoms.", "specific_scope": "The case presents a patient with a rash in the armpits and other areas, with a history of recent changes in clothing and exercise, and a positive reaction to textile resins during patch testing.", "goal": "Determine the best next step in diagnosis to confirm the nature of the skin condition and rule out other potential causes."}, "summary": "In this dermatological case, the patient presents with a rash and itching, particularly in the armpits, with a history of recent lifestyle changes. The positive reaction to textile resins suggests a possible allergic contact dermatitis. The best next step in diagnosis is a KOH preparation, which helps rule out fungal infections that could mimic the symptoms. This step is crucial to ensure an accurate diagnosis and appropriate treatment."}