Yes, it is possible to lead to headache because of reading too much. Since reading too much can too much strain on your your eyes, and if you read under too much light or in a dimly lit room, you will feel headache. So just do not read for a long time, it will not only hurt your eyes, but also your head. Try to have some rest and go on!
Yes, it is possible for you to get headache because of reading too much. When you read too much with little rest, your eyes will get tired easily. You eyes nerves will affect the brain nerves because of the interlinked character. That is why you get headache. You could use some eyes drops to release the symptom. In addition, you could also use the warm compress to make the eyes feel comfortable.