Motor neuron | Amyotrophic lateral sclerosis1,2 |
| Postpolio syndrome3 |
Peripheral nerve | Chronic inflammatory polyneuropathy4 |
Neuromuscular junction | Myasthenia gravis1,2 |
Muscle | |
(a) Inflammatory | Polymyositis1,2 |
(b) Congenital/hereditary | Inclusion body myositis2 |
| Nemaline myopathy5,6 |
| Mitochondrial myopathy7 |
| Carnithine deficiency8 |
| Unspecified congenital myopathy9 |
(c) Endocrine/metabolic | Facioscapulohumeral dystrophy1 |
| Cushing syndrome7 |
| Hypothyroid myopathy10 |
| Myotonic dystrophy with severe hypothyroidism2 |
| Severe hypokalaemic myopathy11 |