A persistent headache for over a week, what could that mean especially to my health?

Headaches: Depending on the features of your headache it may be normal. Tension type headache can last up to 7 days. If you have persistent headache from the start of your headache and you had an illness around the start of the headache you may have new daily persistent headache which you need to see a physician for. There are a lot of treatments available but getting the correct diagnosis is first step.