Pheochromocytoma in association with focal dermatomyositis

Symmetric Distal Upper-Limb Muscle Involvement in a Patient With Dermatomyositis

“…Muscle-specific tyrosine kinase (MuSK) myasthenia gravis (MG) is a rare subtype of MG that is characterized by bulbar predominant symptoms and can be difficult to treat with conventional methods. 1 The diagnosis is based on serum MuSK antibody positivity in the clinical setting of fatigable weakness and confirmed through electro diagnostic testing (EDX). 2 Here, we describe 2 MuSK MG patients who had unique findings of electrical myotonia on EDX.…”

“…Other patterns of muscle weakness have been seldom reported. Lazarewicz K et al 1 described a 53-year-old DM woman with focal muscle weakness of the right forearm. Serum CK was normal, and no myositis-specific antibody was found.…”