Authors
Department of Clinical Toxicology, Isfahan Clinical Toxicology Research Center, Khorshid Hospital, Isfahan, Iran
Abstract
Serotonin toxicity is a common but often unrecognized toxicological condition. In
most cases, a combination of two or more serotonergic drugs can cause serotonin
syndrome. We describe a case of serotonin toxicity in a 17-year-old woman,
secondary to suicidal ingestion of 1000 mg lamotrigine and 400 mg citalopram,
which has been rarely reported. Our patient had a medical history of depression and
was treated with lamotrigine and citalopram. She was brought to the emergency
room with nausea, diaphoresis, agitation, shivering, tremor, vertigo, ataxia,
mydriasis, nystagmus, hyperreflexia, myoclonus, tachycardia, tachypnea, and mild
fever. The symptoms and signs were resolved within 3 days following hydration,
sedation, and cyproheptadine. Minor cardiovascular symptoms are probably due
to the less toxic dose of citalopram. Lamotrigine, especially in combination with
other serotonergic drugs, should be considered a cause of serotonin toxicity.
Keywords
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