Tags: Disease.
Opisthotonus or opisthotonos from Greek roots ὄπισθεν opisthen meaning behind and τόνος tonos meaning tension is a state of severe hyperextension and spasticity in which an individual’s head neck and spinal column enter into a complete bridging or arching position. This abnormal posturing is an extrapyramidal effect and is caused by spasm of the axial muscles along the spinal column.
