Medicine A 60-year-old female is having proximal muscle weakness with increased serum creatinine kinase. The probable diagnosis is: A Polymyositis B Dermatomyositis C Inclusion body myositis D Limb-girdle muscle dystrophy 💡 Explanation A 60-year-old female is having proximal muscle weakness with increased serum creatinine kinase. The probable diagnosis is: ✓ Correct Answer: A. Polymyositis