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|+ Toxidrome) is a syndrome caused by a dangerous level of a toxin in the body. It is often the consequence of a drug overdose. Common symptoms include dizziness, disorientation, nausea, vomiting and oscillopsia. It may indicate a medical emergency requiring treatment at a poison control center. Aside from poisoning, a systemic infection may also lead to one. Classic toxidromes may be variable or obscured by co-ingestion of multiple drugs.
A common tool for assessing for the presence of toxidrome in the United Kingdom is the CRESS tool.
thumb|upright=1.6|Toxidrome flowchart diagnosis
==Anticholinergic==<!-- section is linked from Atropine -->
The symptoms of an anticholinergic toxidrome include blurred vision, coma, decreased bowel sounds, delirium, dry skin, fever, flushing, hallucinations, ileus, memory loss, mydriasis (dilated pupils), myoclonus, psychosis, seizures and urinary retention. Complications include hypertension, hyperthermia and tachycardia. Substances that may cause this toxidrome include antihistamines, antipsychotics, antidepressants, antiparkinsonian drugs, atropine, benztropine, datura, diphenhydramine and scopolamine.