Perifasicular atrophy of muscle fibres is seen in?: (A) Dermatomyositis, (B) Steroid myopathy, (C) Inclusion body myositis, (D) Viral myositis
Answer is A. A distinctive feature of dermatomyositis is atrophy and degeneration of myofibres at the periphery of fasicles (perifasicular) which occurs even in the absence of inflammation.