Muscle & nerve
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Comparative Study
Anatomical study of the infrapatellar branch of the saphenous nerve using ultrasonography.
The purpose of this study was to determine whether ultrasonography allows precise assessment of the course and relations of the infrapatellar branch of the saphenous nerve. ⋯ The infrapatellar branch of the saphenous nerve can be depicted by ultrasonography. Precise mapping of its anatomical course may have significant clinical applications.
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Comparative Study
Jaw muscle weakness: a differential indicator of neuromuscular weakness--preliminary observations.
Flaccid quadriparesis is a common neurological problem. Guillain-Barré syndrome Guillain-Barre syndrome (GBS), polymyositis/dermatomyositis (PM/DM), generalized myasthenia gravis (MG), and hypokalemic periodic paralysis (HPP) constitute the majority of cases of flaccid quadriparesis. Few patients from any of these disease groups lack the cardinal clinical features. We established clinical marker(s) that might have significant discriminating power for diagnosis. ⋯ Presence of jaw-closing weakness pointed toward MG, whereas presence of jaw-opening weakness suggested muscle disease (PM/DM and HPP). GBS patients very rarely had jaw muscle weakness.
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Comparative Study
Do A-waves help predict intravenous immunoglobulin response in multifocal motor neuropathy without block?
Are there electrophysiological findings that predict response to intravenous immunoglobulin (IVIg) in patients with lower motor neuron (LMN) syndromes without multifocal conduction block (MCB)? ⋯ "Abnormal A-waves" may signal IVIg-responsive LMN syndromes even if conduction block is absent.
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Case Reports
Subacute myopathy in a mature patient due to multiple acyl-coenzyme A dehydrogenase deficiency.
Multiple acyl-coenzyme A dehydrogenase deficiency (MADD), also called glutaric aciduria type II, is an inherited metabolic disorder resulting from a deficiency in electron transfer flavoprotein (ETF) or of its ubiquinone oxidoreductase (ETF-QO). It usually occurs in the neonatal period or in early infancy and, very rarely, in adolescents and young adult patients. ⋯ This study demonstrates that metabolic myopathies usually found in infancy may be also diagnosed in older patients. MADD may be easily treated by riboflavin and coenzyme Q10 and therefore should be included in the differential diagnosis of adult-onset painful myopathy.
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Case Reports
Acute superficial sensory neuropathy with generalized anhidrosis, anosmia, and ageusia.
We report a 53-year-old woman with an unusual presentation characterized by acute onset of generalized sensory symptoms associated with anhidrosis, anosmia, ageusia, and elevated titers of anti-GalNAc-GD1a antibodies. After intravenous immunoglobulin therapy, a remarkable improvement in the pain and temperature sensation was noted in her face, trunk, and extremities. The impaired pain and temperature sensation remained distributed along cranial and spinal dermatomes in a non-length-dependent manner, suggesting that the ganglionopathy affected small neurons.