Muscular manifestations of myotonic dystrophy (DM1)
| Myotonia | ▸ Active and evoked |
| Muscular dystrophy and wasting | ▸ Facial and masticatory muscles (facies myotonica) |
| ▸ Axial compartment | |
| ▸ Semidistal compartment | |
| ▸ Distal compartment | |
| ▸ Pharyngeal muscles (nasal speech, dysphagia ) | |
| ▸ Respiratory muscles | |
| Central nervous system | ▸ Cognitive impairment |
| ▸ Mental retardation | |
| ▸ Attentive disorders |