opisthotonos


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opisthotonos

 [o″pis-thot´o-nos]
a form of spasm in which the head and heels are bent backward and the body bowed forward. adj., adj opisthoton´ic.

o·pis·thot·o·nos

, opisthotonus (ō'pis-thot'ō-nŭs),
A tetanic spasm in which the spine and extremities are bent with convexity forward, the body resting on the head and the heels.
[opistho- + G. tonos, tension, stretching]

o·pis·thot·o·nos

, opisthotonus (ō'pis-thot'ǒ-nos, -nŭs)
A tetanic spasm in which the spine and limbs are bent with convexity forward, the body resting on the head and the heels.
[opistho- + G. tonos, tension, stretching]
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OPISTHOTONOS
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OPISTHOTONOS

opisthotonos

(o?pis-thot'o-nos) [? + tonos, tension]
A tetanic spasm in which head and heels are bent backward and the body is bowed forward. This type of spasm is seen in strychnine poisoning, tetanus, epilepsy, the convulsions of rabies, and in severe cases of meningitis. In the latter case, the patient's neck is rigid and the head retracted, seeming to press into the pillow.
See: illustration; emprosthotonos; pleurothotonosopisthotonic, adjectiveillustration
References in periodicals archive ?
Individual rabbits variably exhibited icterus, opisthotonos, gastric petechiae and ecchymoses (Figure 3), colonic serosal hemorrhage, and multifocal hemorrhage in caudal lung lobes.
On June 18, she sought treatment for opisthotonos at a local emergency department.
On July 14, 2006, staggering paresis of the hind legs, incoordination, and intermittent opisthotonos developed in a female barbary macaque (Macaca sylvanus).
Suffering also occurs due to spasm of the muscles of mastication, called trismus or lockjaw, and due to spasm of the back muscles (opisthotonos, color Figure 2).
In the afternoon of the same day, a high fever developed, and seizures began, with extension and struggling of all extremities but without opisthotonos. The patient initially turned both eyes upwards but later stared straight ahead with no spontaneous eye movements and fixed pupils of 3 to 4 mm in diameter.
The patient demonstrated crossed patellar reflexes and developed multiple, painful, generalized spasms and opisthotonos with even the slightest tactile stimulation.
It is associated with laryngeal and pharyngeal muscle spasms, facial grimacing, opisthotonos, and seizures.