To get rid of headache, you may need to take over-the-counter pain relievers. Such include ibuprofen, aspirin, naproxen or acetaminophen. For children and people below 19 years old, it is not advisable to take aspirin. You need also to drink plenty of liquids like water. If you feel like you have fever, place a wetcloth with cool water over your forehead. If headache does not cease, you may visit a doctor.