Concurrent sympathetic and parasympathetic denervation or dysautonomia: This is the simultaneous presence of both dysfunctions.Parasympathetic denervation: An alteration in the parasympathetic pathway prevents pupillary contraction.It’s characterized by miosis of the affected pupil and protrusion or displacement of the third eyelid. Sympathetic denervation or Horner’s syndrome: This occurs when the sympathetic pathway, responsible for pupil dilation, is interrupted.When ingested, they produce intoxication manifested by signs such as excessive salivation, lacrimation, urination, and in some cases, anisocoria.
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