Mitochondrial Disorders

Dec 31, 2018 by in PSYCHIATRY Comments Off on Mitochondrial Disorders

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…

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Congenital Myopathies

Dec 31, 2018 by in PSYCHIATRY Comments Off on Congenital Myopathies

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…

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Toxic Myopathies

Dec 31, 2018 by in PSYCHIATRY Comments Off on Toxic Myopathies

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…

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Inflammatory Myopathies

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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,…

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Focal Neuropathies of the Upper Extremities and Trunk: Radiculopathies, Brachial Plexopathies, and Mononeuropathies

Dec 31, 2018 by in PSYCHIATRY Comments Off on Focal Neuropathies of the Upper Extremities and Trunk: Radiculopathies, Brachial Plexopathies, and Mononeuropathies

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…

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Other Disorders of Neuromuscular Transmission

Dec 31, 2018 by in PSYCHIATRY Comments Off on Other Disorders of Neuromuscular Transmission

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…

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Neuromuscular Mimics

Dec 31, 2018 by in PSYCHIATRY Comments Off on Neuromuscular Mimics

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…

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Nondystrophic Myotonias and Periodic Paralysis

Dec 31, 2018 by in PSYCHIATRY Comments Off on Nondystrophic Myotonias and Periodic Paralysis

INTRODUCTION Print Section Listen In this chapter, we describe the pathophysiology, clinical presentation, laboratory findings, and treatment of the nondystrophic myotonias and periodic paralyses (Table 31-1). There are several inherited…

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Metabolic Myopathies

Dec 31, 2018 by in PSYCHIATRY Comments Off on Metabolic Myopathies

INTRODUCTION Print Section Listen The inherited metabolic myopathies are traditionally classified by their underlying biochemical abnormalities as disorders of (1) carbohydrate, (2) lipid, and (3) adenine nucleotide metabolism. A fourth…

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