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
"Shawl" sign is seen in? 
Select and explain. 
A. Psoriasis, B. Dermato polymyositis, C. Sun burn, D. Skin Cancer
B: Dermato polymyositis
Answer: B: Dermato polymyositis 
Explanation: Ans. B. Dermato polymyositisCutaneous features include nail fold and gingival margin telangiectasia, palmar hyperkeratosis ("mechanic's hands"), and a poikilodermatous (dyspigmentation and telangiectasia) eruption over the shoulder girdle ("shawl sign"). Cutaneous features may precede the systemic illness.