I have had the worse headache all day, no energy, and a fever. no other symptoms at all. i can feel heat coming from the top of my head. been laying around taking tylenol. what could it be? what else could i do? i'm miserable

Doctor can examine: Most people have a headache at some time, such as from colds and flus, lack of sleep, too much driving, long hours on the computer, stress at work, etc... Some people try over-the-counter options include Tylenol, Motrin, Aleve, Excedrin, and their generic brands. A bad or increasing headache (as in this case), recurrent or weird headache, or one with other worrisome symptoms should be examined.