EMG shows myopathy and fibrillations. An 8 year old female has chronic, slowly progressive weakness. She was normal until 1.5 years of age. Serum CK is 600. E An 20 year old male is evaluated for myalgias.
Examination shows mild proximal weakness.
Serum CK is 300. Answer F A 20 year old male has had several episodes of weakness on awakening. Now he is having difficulty arising from chairs. Examination shows mild proximal weakness. EMG is myopathic.