Meningitis
[…] neck (generally not present in children under the age of one year or in patients with altered mental state), back rigidity, bulging fontanelle (in infants), photophobia, opisthotonus[patient.info]
Epilepsy
Five Things Physicians and Patients Should Question August 15, 2018 1 Avoid routine testing for antiepileptic drug (AED) levels in people with epilepsy. AED level testing should not be routinely ordered when seizures are well controlled, and no adverse effect is suspected. The reference ranges should not be used as a[…][choosingwisely.org]
Hysteria
Wellcome L0033539.jpg 2 272 3 752; 1,64 MB Opisthotonus in a patient suffering from tetanus - Painting by Sir Charles Bell - 1809.jpg 610 396; 25 KB Ostendorfer Madonna in[commons.wikimedia.org]
Strychnine Poisoning
The clinical features mimic tetanus with sense of suffocation, twitching of muscles, followed by tetanic convulsions and opisthotonus, each lasting half to two minutes.[medchrome.com]
A phenomenon, called opisthotonus may also occur, in which severe contraction of the paraspinal muscles causes a characteristic arching posture of the neck and back.[calpoison.org]
This may manifest as painful grimacing (the sardonic smile of risus sardonicus ) or back arching (opisthotonus).[lifeinthefastlane.com]
Neonatal Meningitis
Signs suggestive of meningeal irritation, including stiff neck, bulging fontanelle, convulsions, and opisthotonus, occur only in a minority of neonates with bacterial meningitis[ncbi.nlm.nih.gov]
[…] neck (generally not present in children under the age of one year or in patients with altered mental state), back rigidity, bulging fontanelle (in infants), photophobia, opisthotonus[patient.info]
Gaucher Disease
Type 2 GD patients suffer significant progressive neurological impairment, including spasticity, opisthotonus, seizure, and apnea.[ncbi.nlm.nih.gov]
[doi.org] Opisthotonus Type 2 GD patients suffer significant progressive neurological impairment, including spasticity, opisthotonus, seizure, and apnea.[symptoma.com]
[emedicine.medscape.com] Type 2 GD patients suffer significant progressive neurological impairment, including spasticity, opisthotonus, seizure, and apnea.[symptoma.com]
Stiff-Person Syndrome
Abstract Stiff-man syndrome is a rare disorder of the central nervous system consisting of progressive, fluctuating muscle rigidity with painful spasms. It is occasionally associated with endocrine disorders, including insulin-dependent diabetes, and with epilepsy. We investigated the possible existence of autoimmunity[…][ncbi.nlm.nih.gov]
Uremia
In this report, we have presented a diabetic patient with uremia, in which acute Parkinsonism occurred, coupled with acute mental confusion, after a sudden increase in blood urea nitrogen and serum creatinin levels. Diffusion-weighted magnetic resonance imaging revealed a unique cytotoxic-type edema in the bilateral[…][ncbi.nlm.nih.gov]
Gaucher Disease Type 2
A progressively downhill course ensued, characterized by opisthotonus and respiratory difficulties, and the child died at age 7 months.[pediatrics.aappublications.org]
Type 2 is the infantile neuronopathic form, which is characterized by trismus, strabismus, ocular motor apraxia, opisthotonus and death by about two years.[collections.lib.utah.edu]
[…] patients have hepatosplenomegaly similar to type 1, but develop also neurological manifestations (stridor, strabismus and other oculomotor abnormalities, swallowing difficulty, opisthotonus[neuropathology-web.org]
Phenothiazine Poisoning
[…] flushing,diaphoresis diarrhea fever Difficult to distinguish from NMS, MH, cocaine intoxication, thyroid storm Extrapyramidal haloperidol, phenothiazines rigidity, tremor opisthotonus[mcgill.ca]
[…] effects most frequently reported with phenothiazine compounds are extrapyramidal symptoms including pseudo-parkinsonism, dystonia, dyskinesia, akathisia, oculogyric crises, opisthotonus[home.intekom.com]