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Answer:

Usually a daily headache is caused by something simple to fix, like dehydration (drink more water!). It could also be due to the sufferer having taken painkillers frequently for the headache, which causes a kind of withdrawal and leads to more headaches (stop taking painkillers for 48 hours).

It could also be caused by eye strain (get your eyes tested), or stress (relax!). It could also be something more serious and if it has been ongoing for a few days it might be a good idea to see a doctor.

First answer by Lizzi fish. Last edit by Lizzi fish. Contributor trust: 0 [recommend contributor recommended]. Question popularity: 2 [recommend question].