Migraines - These are the most common type of vascular headache, which produces severe pain that occurs on one or both sides of the head, sometimes precluded by flashing lights or loss of vision. Migraines can be triggered by a number of things such as; hormones, stress, anxiety, not eating, photosensitivty, lack of sleep, etc.
Tension headaches -Are related to stress, anxiety and depression. They can occur when the muscles tighten - up in the shoulders, neck, scalp or jaw. If you overwork, skip meals, consume too much alcohol, or don't get enough sleep tension headaches can occur.
Cluster headaches - Are not very common. They come in clusters, usually 1 - 3 at a time during the day, and this can last anywhere from 2 weeks to 3 months. Symptoms include an intense pain around one eye that is throbbing and sometimes burning or piercing. The pain can spread to other nearby areas such as the cheek or jaw.
In general, headaches are due to Qi stagnation and blood stasis. This develops from either an external invasion or an internal imbalance. External invasions occur when wind-cold, wind-heat, or wind-damp invade through the pores of the skin; these headaches are usually of an excess nature and short in duration.
Headaches derived from internal imbalances are mostly caused by Qi & blood deficiencies, Yin, Yang or Jing (essence) deficiency, or Yang rising. Deficient headaches are more persistent and severe; and commonly involve the Spleen, Liver and Kidneys. This category includes headaches caused by hormone & metabolic imbalances, mental & emotional stress, disequilibrium in the neuroendocrine system, as well as, organ systems that are not functioning at 100%.