There are several possible causes for headaches. According to a Chiropractor friend of mine, dehydration is a major cause. For example, too many Margaritas one night can leave you seriously dehydrated, hung over and with a headache the next day.
Other causes are stress, allergies, etc. Dr. Hoffman's reference below explains some of these in detail.
Tata927
2005-09-02 00:32:15 UTC
Stress. I think you are too stressed. Try to relex more, sleep more, then your headaches will go away.
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