Red as a beet. "red as a beet, dry as a bone, hot as a hare, blind as a bat, mad as a hatter, full as a flask". Cutaneous vasodilation to dissipate heat because of loss of sweat production. Pupillary dilation can manifest as blurry vision. Anxiety, agitation confusion, bizarre behavior. Urinary retention. 600 causes. Can include antihistamines, tricyclic antidepressants, sleep aids, cold meds, some plants.