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Serotonin syndrome (SS) is a group of symptoms that may occur with the use of certain serotonergic medications or drugs. [1] The symptoms can range from mild to severe, and are potentially fatal. [ 4 ] [ 5 ] [ 2 ] Symptoms in mild cases include high blood pressure and a fast heart rate ; usually without a fever . [ 2 ]
Serotonin syndrome is typically caused by the use of two or more serotonergic drugs, including SSRIs. [118] Serotonin syndrome is a condition that can range from mild (most common) to deadly. Mild symptoms may consist of increased heart rate , fever , shivering, sweating , dilated pupils , myoclonus (intermittent jerking or twitching), as well ...
Almost any medication involved with serotonin regulation has the potential to cause serotonin toxicity (also known as serotonin syndrome) – an excess of serotonin that can induce mania, restlessness, agitation, emotional lability, insomnia, and confusion as its primary symptoms.
Because serotonin and the related hormone melatonin are involved in promoting sleep, they counterbalance the wake-promoting action of increased catecholaminergic neurotransmission. This is accounted for by the lethargic feel that some SSRIs can produce, although TCAs and antipsychotics can also cause lethargy albeit through different mechanisms.
Similarly to other antidepressants, SNRI medications have been found to cause visual snow syndrome, a condition characterized by visual static, palinopsia (negative after image), nyctalopia (poor vision at night), and photophobia (brighter presentation of lights or highlighted colors). Evidence shows that 8.9% of those taking SNRIs experienced ...
TCA overdose may occur by accident or purposefully in an attempt to cause death. [2] The toxic dose depends on the specific TCA. [2] Most are non-toxic at less than 5 mg/kg except for desipramine, nortriptyline, and trimipramine, which are generally non-toxic at less than 2.5 mg/kg. [5] [2] In small children one or two pills can be fatal. [6]
Lithium is known to be a potential precipitant of serotonin syndrome in people concurrently on serotonergic medications such as antidepressants, buspirone and certain opioids such as pethidine (meperidine), tramadol, oxycodone, fentanyl and others.
Ingestion and absorption of tyramine causes extensive release of norepinephrine, which can rapidly increase blood pressure to the point of causing hypertensive crisis. Concomitant use of serotonin-enhancing drugs, including SSRIs, serotonergic TCAs, dextromethorphan, and meperidine may cause serotonin syndrome.