All of following are examples of proximal muscle weakness EXCEPT?: (A) Myasthenia gravis, (B) Thyroid myopathy, (C) Myotonic dystrophy, (D) Duchenne's muscular dystrophy
Answer is C. Myasthenia gravis Features Eye muscle weakness, Ptosis, Diplopia In contrast, all myopathies have a proximal weakness (an exception being Myotonic dystrophy, which has a distal weakness).