Horizontal nystagmus

Severe Delirium with auditory or visual hallucinations and confusion, delusional thinking, autonomic instability with hypertension, increased temperature, severe agitation, horizontal nystagmus... 

Cerebellar strokes can be mild, with sudden vertigo, nausea, imbalance, and horizontal nystagmus, which soon recovers. They are frequently misdiagnosed as labyrinthitis. More... 

Headache, dizziness, and somnolence occur in a small proportion of individuals who take piperazine (3). More serious neurological reactions occur rarely, but tend to be reported in young children, in people with neurological or renal disease, or after overdosage. Symptoms in such cases include ataxia, paresthesia, undue clumsiness, myoclonus, and nystagmus. Choreiform movements and an electroencephalogram with prominent slow waves have been reported as well as an exacerbation of petit mal (4) and absence seizures (5). In a child, horizontal nystagmus and hjrpotonia have been reported after a normal dose (6). 

Stimulants (amphetamines, cocaine, phencyclidine) Agitation, anxiety, seizures. Hypertension, tachycardia, arrhythmias. Mydriasis, vertical and horizontal nystagmus with PCP. Skin wana and sweaty, hyperthermia, increased muscle tone, possible rhabdomyolysis Control seizures, hypertension, and hyperthermia... 

A. Mild intoxication causes lethargy, euphoria, hallucinations, and occasionally bizarre or violent behavior. Hypersalivation and lacrimation may occur. Patients may abruptly swing between quiet catatonia and loud or agitated behavior. Vertical and horizontal nystagmus are prominent with PCP intoxication. 

In six cases involving drivers arrested for driving under the influence who subsequently tested positive for toluene, blood toluene concentrations were 12-45 mg/1 [98 ]. All were intoxicated, and had symptoms that included balance problems, confusion and disorientation, loss of coordination, and inability to follow instructions. They also had horizontal nystagmus but not vertical nystagmus, tachycardia and raised blood pressure, and reduced body temperature. These findings are consistent with prior reports that subjects with blood toluene concentrations above 10 mg/1 have impaired driving skills. 

Stupor, eyes open, random movements, resting horizontal or vertical nystagmus, hyperreflexla, hypertension onset, 0.5-1 h duration, 8-24 h... 

Nystagmus Involuntary rotatory, horizontal, or vertical movements of the eyes most noticeable when gazing at rapidly moving objects or at fixed objects in the peripheral field of view. 

Ocular findings, including nystagmus (horizontal or vertical), weakness or paralysis of the lateral recti muscles, and weakness or paralysis of conjugate gaze Korsakoff s psychosis is most characterized by the following ... 

Both indoleamine (e.g., lysergic acid diethylamide, LSD psilocybin) and phenethylamine hallucinogens (e.g., mescaline) increased pupil diameter.26 There have been no systematic studies of the effects of these drugs on dynamic measures of the light reflex. Phencyclidine (PCP) does not cause marked changes in pupil size or light reflex. However, subjects intoxicated with PCP often show horizontal and vertical nystagmus.26... 

One week after starting to take metformin 850 mg in divided dose a 74-year-old man became confused and disoriented and had speech abnormalities and bilateral horizontal gaze-evoked nystagmus. Electroencephalography suggested a toxic-metabolic... 

Hog, 137-38, 40 Holmes, Oliver VVenddl, 16, 206 Horizontal Gaze Nystagmus Test, 169... 

Phencyclidine use results in excitation with marked paranoid or aggressive behavior, which is often selfdestructive. Effects include distortion of body image, diminished pain perception, illusions, and delusions, including a perception of superhuman strength and invulnerability. Miosis and nystagmus (horizontal, vertical, and rotary) may be seen in association with ataxia, bizarre behavior, and hallucinations. Tachycardia, hypertension, hyperreflexia, seizures, respiratory depression, and coma are reported with high doses. Dystonias and dyskinesias have been reported. 

PCP extremely toxic, horizontal and vertical nystagmus, paranoia, rhabdomyolysis overdose is common, with convulsions and death... 

OPC with the pronounced anti-cholinesterase effect (150 = MO 7 - 1-10"9 M) are strong miotics. Miosis may serve as both a diagnostic criterion and a criterion of severity of patient s condition. In case of severe poisonings, dotty pupils retain for a long time, reaction for light is absent nystagmus is vertical and horizontal [22, 43],... 

The signs and symptoms point to phencyclidine intoxication. The presence of both horizontal and vertical nystagmus is pathognomonic. The answer is (D). 

Phencyclidine (PCP) Coma with eyes open, horizontal and vertical nystagmus, hyperacusis... 

Horizontal-gaze nystagmus is common with a variety of dmgs and toxins, including barbiturates, ethanol, carbamazepine, phenytoin, and scorpion envenomation. Phencyclidine (PGP) may cause horizontal, vertical, and even rotatory nystagmus. 

The horizontal gaze nystagmus (HGN) is an involuntary jerking of the eye which occurs naturally when the gaze is directed to the edge of a person s visual field. Under normal... 

Bums, M. (2003). The robustness of the horizontal gaze nystagmus (HGN) test. Final report submitted to the National Highway Traffic Safety Administration under contract DTNH22-98D-55079. Southern California Research Institute, Los Angeles, CA. 

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