This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Miscellaneous, Subject name: Skin
Target or Iris lesion are seen in: 
Select and explain. 
A. Urticaria, B. Erythema multiforme, C. Scabies, D. Lichen planus
B: Erythema multiforme
Answer: B: Erythema multiforme 
Explanation: Ans. B. Erythema Multiforme (EM)* It is an acute self-limited, usually mild and often relapsing mucocutaneous syndrome* MCC is infection with Herpes simplex virus.* 2nd MCC: Mycoplasma pneumonia.Clinical Presentation* Occurs in all ages but mostly in adolescents & young adults, with a slight male preponderance.* Characteristic Target/lris/Bull's eye/Annular lesion.* Most occur in symmetric acral distribution on extensor surface of extremities (hand, feet, elbow & knees), face & neck and appear less frequently on thigh, buttocks & trunk.* Influenced by mechanical factors (Koebner's phenome- non) & actinic factors (predilection of sun exposed sites).