Many reasons: Headaches can be associated with stress, with sleep deprivation, with medicines, with some foods, with viruses and other infections, and many other causes. You say you're fit...Good! you can be fit and still have any of the above problems. Have you seen your doctor for an exam yet?
Answered 3/26/2013
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A doctor has provided 1 answer
A doctor has provided 1 answer
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