In medicine, a toxidrome (portmanteau of toxic and syndrome) is a syndrome caused by a dangerous level of toxins in the body. Common symptoms include dizziness, disorientation, nausea, vomiting, and oscillopsia. A toxidrome may indicate a medical emergency requiring treatment at a poison control center. Aside from poisoning, a systemic infection may also lead to a toxidrome.
The most common toxidromes are classified as:
Anticholinergic toxidrome
The symptoms of an
anticholinergic toxidrome include blurred vision,
choreoathetosis,
coma, decreased
bowel sounds,
delirium, dilated
pupils, dry
skin,
fever,
flushing,
hallucinations,
ileus,
memory loss,
mydriasis,
myoclonus,
psychosis,
seizures, and
urinary retention.
Complications include
hypertension,
hyperthermia, and
tachycardia. Substances that may cause this toxidrome include
antihistamines,
atropine,
benztropine,
datura,
tricyclic antidepressants, and
scopolamine.
Due to the characteristic appearance and behavior of patients with this toxidrome, they are colloquially described as "hot as a hare, dry as a bone, red as a beet, mad as a hatter, blind as a bat".
Cholinergic toxidrome
The symptoms of a
cholinergic toxidrome include
bronchorrhea,
confusion,
defecation,
diaphoresis,
diarrhea,
emesis,
lacrimation,
miosis,
muscle fasciculations,
salivation,
seizures,
urination, and weakness. Complications include
bradycardia,
hypothermia, and
tachypnea. Substances that may cause this toxidrome include
carbamates,
mushrooms, and
organophosphates.
Hallucinogenic toxidrome
The symptoms of a
hallucinogenic toxidrome include
disorientation,
hallucinations, hyperactive bowel sounds,
panic, and
seizures. Complications include
hypertension,
tachycardia, and
tachypnea. Substances that may cause this toxidrome include
amphetamines,
cocaine, and
phencyclidine.
Opiate toxidrome
The symptoms of an
opiate toxidrome include
altered mental states,
miosis,
shock, and unresponsiveness. Complications include
bradycardia,
hypotension,
hypothermia,
shallow respirations, and a slow respiratory rate. Substances that may cause this toxidrome include
dextromethorphan,
opiates, and
propoxyphene.
Sedative/hypnotic toxidrome
The symptoms of a
sedative/hypnotic toxidrome include
ataxia, blurred vision,
coma,
confusion,
delirium, deterioration of
central nervous system functions,
diplopia,
dysesthesias,
hallucinations,
nystagmus,
paresthesias,
sedation, slurred speech, and
stupor.
Apnea is a potential complication. Substances that may cause this toxidrome include
anticonvulsants,
barbiturates,
benzodiazepines, and
ethanol.
Sympathomimetic toxidrome
The symptoms of a
sympathomimetic toxidrome include
anxiety,
delusions,
diaphoresis,
hyperreflexia,
mydriasis,
paranoia,
piloerection, and
seizures. Complications include
bradycardia,
hypertension, and
tachycardia. Substances that may cause this toxidrome include
albuterol,
amphetamines,
cocaine,
ephedrine,
ma huang,
methamphetamine,
phenylpropanolamine, and
pseudoephedrine.
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