Reliable detection of Win98 may not be possible. Sometimes a headache is just a part of another illness, such as a cold or flu or strep throat. When you get better, the headache gets better, too. For example, staying up too late, skipping a meal, or playing in the hot sun too long can set off a headache. Some kids get headaches from riding in a car or bus or from straining their eyes spending too much time watching TV or using a computer .
Strong odors can start a headache, too.
Perfume, smoke, the smell of a new car or carpet, and fumes from paint or gasoline are some examples. Some troublemakers can be chocolate, cheese, yogurt, bananas, and processed meats such as bacon, bologna, and hot dogs. The caffeine in sodas, chocolate, and coffee or tea may cause headaches as well, so it's best to limit the amount of caffeine you have. Of course, not everybody gets headaches for the same reasons. The things that give your best friend an aching head might not bother you at all.