Have you been suffering from chronic or frequent headaches with no apparent cause? After ruling out possibilities like a brain tumor and sinus infection, your doctor may have sent you home with the advice to lower your stress levels and take pain relievers as needed. This is quite common. And your doctor is not wrong—lowering your stress levels and taking over-the-counter pain relievers can help ease chronic headaches. However, you should also consider seeing a physical therapist for your headaches.