1)
constipation: If we keep stools in intestines then there is tension so the control in the brain gets headach
2)
indigestion have vomiting to reduce headache. complain of stomach pain
3)
less water Intake less water strain the body. if have motion then body looses water and dehydrated and then there is no cooling machanism is there and body gets strained and causes headache.
4)
coffee and teanerves get used to these stimulants and if we dont take on time for such people gets headache.
5)
nose mucus or rompa or sinusitis air does not go properly to cell and strain
6) eyes strain and eye glasses lens does match and strain,
7)neck nervous pressing or mental stress also causes headache
8)tension cause blood dense cause pumping irregular and cells release bad harmones into blood that cause strain and headache
anger irritation and anxiety causes bad harmones in blood