Headaches are a common problem and more than 90% of all headaches are classified as tension headaches, which occur when the muscles in the back of your neck and/or scalp tighten. Sometimes they can be relieved by lying down at the first hint of a headache in a dark room, drinking cool water and placing a cold pack over the head and face.
What are the causes of headaches?
The causes of headaches are almost too numerous to mention.
Causes may include, to name a few;
Dehydration
Hormonal imbalances such as PMS, peri-menopause, side effects of OCP or HRT.
Liver dysfunction
High blood pressure
Sinus, dental and ear infections
Blood sugar problems
Exposure to chemical toxins
It is important to see your doctor for tests to exclude serious causes of headaches, particularly if the headaches are constant, severe or frequent in nature.
Products
Arkopharma: Migrastick (1 stick)
Arkopharma Migrastick containing 100% pure and natural essential oils of Lavender and Peppermint for the relief of headache, migraine, stress and tension.
Price: 
$13.68
Sandra Cabot Book Magnesium The Miracle Mineral
Magnesium is a mineral that can make a huge difference to your health and yet many people, even in the developed world, have inadequate magnesium levels in their body.