Have you tried the aspirin and Tylenol combination? Start with 2 - 325mgs tablets of each every 4 hours.

My online research shows a 14 year old can take this combination without any problems. If he is an adult size/weight, he could even take 3 of each every 6 hours.

It has been my choice for the more intense head aches. Since I have head aches frequently, I think I may have more tolerance for them.

Have you checked his blood pressure when his head aches are the worst? If the intensity goes up and down with his blood pressure, you should ask the doctor if there is something he suggests.

Does he have sore areas behind his ears? If so, he can have muscle spasms that are causing his head aches. These muscles connect to the neck vertebra. It is not uncommon for these to be strained from the concussion impact forces.

Hope he gets some relief from the aspirin/Tylenol combination.

My best to you both.