Skin A young boy presents with dark patches with itching. On rubbing there is appearance of wheal. Diagnosis is – A Addison's disease B Urticaria pigmentosa C Chronic idiopathic urticaria D Erythema multiforme 💡 Explanation A young boy presents with dark patches with itching. On rubbing there is appearance of wheal. Diagnosis is - ✓ Correct Answer: B. Urticaria pigmentosa