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Medical AI Inquiry: You were designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.
user
A 60-year-old female is having proximal muscle weakness with increased serum creatinine kinase. The probable diagnosis is:
assistant
The correct answer is  A. It is a subacute inflammatory myopathy affecting adults, without rash, involvement of eye, family history of neuromuscular disease B. Dermatomyositis is identified by a rash preceding muscle weakness. C. Inclusion body myositis has an asymmetrical muscle involvement. D. Limb girdle muscular dystrophy and would have pediatric presentation and not in old age. Even if it LGMD patient survives by 60 years of age severe muscle wasting with contractures would have occurred.