Opisthotonus

The opisthotonos ( gr ópisthen, backward ' and τόνος, tone ', ' voltage ') is a spasm in especially the extensor muscles of the back. It leads to a strong backward tilting of the head and over-stretching of the trunk and extremities.

He comes as a symptom of some neurological disorders such as lesions of the midbrain, brain hemorrhage, maple syrup urine disease, meningitis, and also in tetanus, and as a side effect in the context of Frühdyskinesien ago at neuroleptics. It can also occur in other neurological disorders, the cerebral form of malaria.