What causes headache
while reading and after exams
One might get a headache while reading as a result of lack of open air. Having a hard time as a result of unclear notes or too much light, may also trigger the headache. You should take breaks to avoid the condition and take a pain reliever.
Eye strain, maybe stress, could be something worse. See a doctor to know for sure. Never mess with headaches.
Maybe stress or hunger ?!
Dehydration. For each cup of soda or coffee you drink drink an extra cup of water.
Generally cold and cough causes HEADACHE. Some time after effects of surgery due to anesthesia. Severe migraine too causes HEADACHE. Some times pollution and poisonous gases too cause headache.