see also: [[Confusion]] #toxicology # toxicological causes of coma ![[Pasted image 20230701121634.png]] **mnemonic**: LETHARGIC - [[Lead]], [[​Lithium Toxicity|lithium]] - ethanol, [[toxic alcohols#Ethylene Glycol]] - [[TCA overdose]] - [[Opiate overdose|heroin]], hepatic encephalopathy, heavy metals, hydrogen sulfide, hypoglycaemics - arsenic, antidepressants, anticonvulsants, antipsychotics, antihistamines - rohypnol, risperidone - GHB - isoniazid, insulin - [[carbon monoxide]], [[Cyanide]], [[Clonidine]]