risus sardonicus

Opisthotonus with the presence of the risus sardonicus is also a symptom of strychnine poisoning.

Meanwhile, other muscles are clenching, leading to arching of the back, the "risus sardonicus" - a horrid involuntary smile - and an inability to drink.

The shorter nerves are the first to be inhibited, which leads to the characteristic early symptoms in the face and jaw, risus sardonicus and lockjaw.

Ten to twenty minutes after exposure, the body's muscles begin to spasm, starting with the head and neck in the form of trismus and risus sardonicus.

Coupled with this distortion of the face, this Hippocratic smile, or 'risus sardonicus,' as the old writers called it, what conclusion would it suggest to your mind?"

Gajdusek provided the first medical description of this unique neurological disorder, which was miscast in the popular press as the "laughing sickness" because some patients evinced risus sardonicus as a symptom.

This gothic horror tale describes a man who has experienced a shock so terrifying that he undergoes a medical condition called Risus sardonicus, in which his face is permanently paralyzed into an exaggerated grin.

The first sign is trismus, or lockjaw, and the facial spasms called risus sardonicus, followed by stiffness of the neck, difficulty in swallowing, and rigidity of pectoral and calf muscles.

In season 3, episode 6, "True Romance: Part 1" of the UK TV series Cracker, a body is found that exhibits risus sardonicus secondary to the cause of death being electrocution.

'Although there are always some proctors and some priests found stone-cold dead in the dawn's early light, grinning in risus sardonicus, the morning after Saint Carol's feast; I am not the only widow with a long memory.'