Headaches / Migraines
90% of headaches are caused by muscular tension in the upper back.
Reoccurring headaches are know as cluster headaches.
Migraines are much more severe than the above. You may experience nausea, vomiting, the need to sit in dark , quite room, temporary blindness to name but a few. There are many reasons for migraines and each person may be different.
All the above may be caused by: hormonal changes, certain foods, stress, lack of sleep, poor digestive function, changes in weather, blood sugar irregularities, environmental chemicals or other health related issues.