A 54-year-old woman has progressive difficulty climbing stairs and lifting objects overhead. Examination shows symmetric proximal weakness,

Question

A 54-year-old woman has progressive difficulty climbing stairs and lifting objects overhead. Examination shows symmetric proximal weakness, violaceous rash over the eyelids, and erythematous papules over MCP joints. CK is markedly elevated. Which of the following is the most likely diagnosis?

Accepted Answer

Dermatomyositis

Answer

Lambert-Eaton syndrome

Answer

Myasthenia gravis

Answer

Fibromyalgia

Answer

Polymyalgia rheumatica

Dermatomyositis — USMLE Step 3 MCQ

A 54-year-old woman has progressive difficulty climbing stairs and lifting objects overhead. Examination shows symmetric proximal weakness, violaceous rash over the eyelids, and erythematous papules over MCP joints. CK is markedly elevated. Which of the following is the most likely diagnosis?