Think got heat rash because dehydrated? dry mouth? reason why always feel dehydrated? do psych meds create dehydration long after leaving body

Yes: Antidepressant and a number of medications can cause dry mouth. Drink plenty of water. Can add some lemon to stimulate saliva. Also, chewing sugar free gum can help with salivary flow.

Yes: These drugs can cause dry mouth. Dry mouth can cause serious dental problems, your teeth are much more at risk for decay. So drink water to hydrated, avoid sodas and juice, too much sugar and acid, chew xylitol or sugar free gums. Biotene dry mouth products are great. If you use mouthwash you need one without alcohol.

Time for a complete physical. Dehydration alone should not cause a heat rash, but may give you dry mouth symptoms. So can diabetes, along with All the other causes mentioned. See your GP to determine cause of what you call dehydration. See your General Dentist for relief from dry mouth symptoms. Don’t self diagnose. Your 5 minutes here is not a substitute for a full professional examination.