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Mydriasis is the dilation of the pupil, usually having a non-physiological cause, [3] or sometimes a physiological pupillary response. [4] Non-physiological causes of mydriasis include disease, trauma, or the use of certain types of drugs. It may also be of unknown cause.
A human adult exhibiting voluntary control over his iris muscles, where he can cause his pupil to dilate and constrict on command. A dilation response , is the widening of the pupil and may be caused by adrenaline; anticholinergic agents; stimulant drugs such as MDMA, cocaine, and amphetamines; and some hallucinogenics (e.g. LSD). [3]
An opioid overdose is toxicity due to excessive consumption of opioids, such as morphine, codeine, heroin, fentanyl, tramadol, and methadone. [3] [5] This preventable pathology can be fatal if it leads to respiratory depression, a lethal condition that can cause hypoxia from slow and shallow breathing. [3]
The main side effects heroin causes on appearance according to New Health Advisor are: Weight loss due to loss of appetite, or because a heroin abuser may not prioritize eating.
Nerves involved in the resizing of the pupil connect to the pretectal nucleus of the high midbrain, bypassing the lateral geniculate nucleus and the primary visual cortex. From the pretectal nucleus neurons send axons to neurons of the Edinger-Westphal nucleus whose visceromotor axons run along both the left and right oculomotor nerves .
The age-adjusted drug poisoning death rate involving heroin doubled from 0.7 to 1.4 deaths per 100,000 people between 1999 and 2011 and then continued to increase to 4.1 in 2015. [196] The third wave of overdose deaths began in 2013, related to synthetic opioids, particularly illicitly produced fentanyl. [ 194 ]
Dilated pupils. Loss of muscle coordination or twitching muscles. Muscle rigidity. Tremor. Heavy sweating. Diarrhea. Headache. Shivering. Goosebumps. Severe serotonin syndrome can be life ...
Sildenafil, tadalafil and other treatments for ED all belong to a class of medications called phosphodiesterase type 5 or PDE5 inhibitors, which dilate the blood vessels that supply blood to the ...