[Sociomedical aspects of myasthenia syndrome].

Myasthenia gravis is in group of disorders transmission at the motor end-plates is abnormal. Myasthenia gravis is characterised by fluctuating weakness, consisting principally of abnormal fatiguability, with improvement after rest. Since this symptom is subjective the diagnosis is very difficult in the early stages. Lambert Eaton's myasthenic syndrome (LEMS) is characterised by weakness and fatiguability of proximal limb muscles, mainly in legs, with improvement after exercise. Considering the degree of disease, similar symptomatology with a substantially different treatment, we performed this paper to enable the earlier diagnosis and adequate care of these patients.