| myasthenia | <anatomy, neurology> Muscular debility, any constitutional anomaly of muscle. Origin: Gr. Astheneia = weakness (18 Nov 1997) |
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| myasthenia angiosclerotica | <symptom> A symptom complex characterised by leg pain and weakness brought on by walking, with the disappearance of the symptoms following a brief rest. (12 Dec 1998) |
| myasthenia gravis | <disease, neurology> The characteristic feature of the disease is easy fatigue of certain voluntary muscle groups on repeated use. Muscles of the face or upper trunk are especially likely to be affected. In most and perhaps all cases due to the development of autoantibodies against the acetylcholine receptor in neuromuscular junctions. Immunisation of mice or rats with this receptor protein leads to a disease with the features of myasthenia. (18 Nov 1997) |
| myasthenia gravis and thymoma | <radiology> Of patients with MG 15% have thymoma, of patients with thymoma 50% have MG (12 Dec 1998) |