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Table of ContentsMyoclonic jerking or HyperreflexiaDrugs leading to hyperreflexia or muscle irritability are often those that may cause seizures:
MYOCLONUS and HYPOTENSIONDirectly proconvulsant drugs include TCAs, propranolol, chloroquine, lithium and neuroleptics. However, if there is compromise of CNS perfusion, then seizures may occur with any of these drugs. MYOCLONUS, HYPERREFLEXIA and HALLUCINATIONSMyoclonic jerking (without fitting) is suggestive of the serotonergic syndrome. Hyperadrenergic states (withdrawal states, sympathomimetic drugs) and the serotonergic syndrome are associated with hyperreflexia. In serotonin toxicity, the hyperreflexia is typically confined to the lower limbs. MYOCLONUS and ANTICHOLINERGICSSeizures and hyperreflexia are more common with pheniramine, TCAs (particularly amoxapine, dothiepin and desipramine) and orphenadrine. Serotonin reuptake inhibitors can cause prominent myoclonus and tremor that may be confused with seizures. Hyperreflexia from SSRIs is often confined to the lower limbs. MYOCLONUS and ACIDOSISMarked hyperreflexia or myoclonus in the absence of seizures suggests sympathomimetic drugs or serotonergic drugs. Note that the content you create on http://curriculum.toxicology.wikispaces.net is licensed under the Creative Commons Attribution Share-Alike Non-Commercial 3.0 License. Please only submit content that you write yourself or that is in the public domain. Learn more about our open content policy. |
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