Читать книгу Neurology - Charles H. Clarke - Страница 193

Muscle disease tends to produce symmetrical abnormalities (Chapter 10).

Inflammatory disease, such as polymyositis, causes induration, pain and weakness. Dystrophies and most metabolic muscle diseases present typically with weakness alone; pseudohypertrophy (excessively bulky muscles) may develop. Slow relaxation is a feature of myotonic conditions. Fatiguability is characteristic of myasthenia gravis, and the reverse, an increase in power on exercise is sometimes seen in LEMS.