INTRODUCTION Print Section Listen Mitochondrial myopathies and neuropathies or neuromyopathies refer to a heterogeneous group of disorders caused by dysfunction of mitochondria.1–10 Mitochondrial disorders can be classified according to the…

INTRODUCTION Print Section Listen The term “congenital myopathy” was originally used to describe a group of myopathic disorders presenting preferentially, but not exclusively, at birth and being morphologically distinct from…

INTRODUCTION Print Section Listen Many drugs can cause a myopathy.1–10 The pathophysiological mechanisms are diverse and, in many instances, unclear. Medications can have either a direct or an indirect adverse…

INTRODUCTION Print Section Listen There are four major categories of idiopathic inflammatory myopathy: dermatomyositis (DM), polymyositis (PM), immune-mediated necrotizing myopathy (IMNM), and inclusion body myositis (IBM), which are clinically, histologically,…

INTRODUCTION Print Section Listen Numbness, pain, and/or weakness involving one or both arms are common reasons for referral to the neuromuscular clinician. These symptoms may be due to radiculopathy, brachial…

INTRODUCTION Print Section Listen This chapter describes the disorders of neuromuscular transmission (DNMT) other than myasthenia gravis (MG) (Table 26-1). The neuromuscular junction (NMJ) is a physiologically complex structure. Its…

INTRODUCTION Print Section Listen We define “neuromuscular mimic” as any musculoskeletal condition that presents with pain and apparent weakness, and can mimic a neuromuscular etiology such as radiculopathy or entrapment…