While a migraine is perhaps the most well-known headache type, not all chronic head pain is migraine. Often, headache is a symptom of an underlying medical condition. Sinus problems, vision disorders, cardiovascular disease, infections, and certain neurological issues may cause frequent headache and in some cases may mimic migraine. There are also several other headache types, such as cluster headaches and tension headaches, which can cause persistent head pain that is just as debilitating as migraine.