What are some autonomic reactions from stress?

'fight or flight': Humans have built-in emergency responses to help us survive life-threatening situations. A combination of stress hormones (epinephrine [aka adrenalin], cortisol, etc) & high sympathetic (autonomic) nervous system output results in increased pulse & bp, shunting of blood toward the vital organs, faster reaction times etc. Unhelpfully, we react to stress this way too, which wears out our bodies.

Various: Your autonomic nervous system (ANS) controls virtually all the organs and systems in your body. If your sympathetic nervous system(sns) hyper - you could have cold hands, palpitations, sweating, htn, dry mouth, constipation, dry eyes, dry mouth. If your parasympathetic (pns) is hyper, you could have urgent urination, diarrhea, gas, bloating, watery eyes, allergies, asthma, low blood pressure...