Serotonin syndrome is the clinical manifestation of excessive stimulation of serotonin receptors in the CNS. This occurs when excess serotonin (5-hydroxytryptamine) accumulates in the CNS, secondary to a number of pharmacological mechanisms; inhibition of serotonin metabolism (monoamine oxidase inhibitors), prevention of serotonin re-uptake in nerve terminals (serotonin re-uptake inhibitors), serotonin release or increased intake of serotonin precursors (tryptophan).
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