Opisthotonus

Opisthotonus is a symptom.
 * This is a specific position on the back, in which the patient rests on his head and heels with his body bent forward into an arch due to the spasmodic spasm of the back muscles.
 * Opistotonus can be a symptom of tetanus, eclampsia, or hysteria.

Related articles

 * Tetanus
 * Hysteria