Treating Headaches with Acupuncture in Denver Headaches are such a prevalent chronic pain in our society.  Let’s take a look at what causes them, and how they can be treated drug-free What Is A Headache? There are four types of headache: vascular, muscle contraction (tension), traction, and inflammatory. Vascular headaches migraines in particular, are the most common. Symptoms of a migraine include severe pain on one or both sides of the head, an upset stomach, and possibly d