Ive had a persistent headache, varying in intensity and placement, for the past 7 days. ibuprofen sometimes helps, but not always, it alleviated after lightly hitting my head on the wall in frustration, but did come back. what could be the problem?

Dehydration is a frequent cause of headache. It is summer and with high humidity and temperature, and increase in fluid intake may alleviate your headache. Also refrain from anything that dehydrates, such as alcohol, saunas or whirlpools. Check your blood pressure and if out of range contact your family doctor. relax neck with exercise and massage.