Question

why we get headache which factors responsible for this

Answer 1

changes in our routine, less sleep, frustration

Answer 2

These include:

alcohol-induced hangover

brain tumor

blood clots

bleeding in or around the brain

"brain freeze," or ice-cream headaches

carbon monoxide poisoning

concussion

dehydration

glaucoma

teeth-grinding at night

influenza

overuse of pain medication, known as rebound headaches

panic attacks

stroke