A member asked:

While body readying for bowel movement, get pressure in neck/ head, sleepy, mentally dull. it stops as soon as i void. poss lack of fibre/ hydration?

A doctor has provided 1 answer
Dr. James Rochester answered

Specializes in Family Medicine

BM and MS changes: Robert, are you bearing down forcefully to have a BM? IF so what you describe is known as a vagal reaction. Bearing down stimulates vagus nerve, heart rate drops, BP drops, pressure in head/neck not uncommon. If so, more fresh fruits, veggies, water and increase fiber.

Answered 1/28/2015

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