Basically it’s a decrease in oxygen to the brain. If the brain receives less oxygen per millilitre of blood, it will simply increase the amount of blood flow to increase the overall amount of oxygen received. In order to increase the amount of blood flow it must dilate the blood vessels that supply blood to the brain. When these vessels dilate, it stretches pain fibres that wrap around the outside of these vessels. When these pain fibres are stretched they are activated and start sending pain signals into the brain, resulting in your perception of pain.
Headaches and migraines may also be caused by a misalignment or dysfunction of a vertebra in the top of the neck. This then causes inflammation and tension of the joints, muscles and blood vessels at the base of the neck, which then transfers pain up into the skull.
Gentle but specific adjustments to the neck and upper back can help to restore the normal alignment and function of the vertebrae in the neck, which removes the tension that causes headache and migraine symptoms. As well as removing the tension, the inflammation around the joints, muscles and blood vessels is decreased and the pain fibres begin to be deactivated.
There are other factors that contribute to headaches, but these figures, and everyday experiences show that neck problems are a huge contributor.
There are two types of soft, fibrous connective tissues in the human body that support muscles and bones. These are your tendons and ligaments.
Sometimes called wear and tear arthritis, osteoarthritis is the most common type of arthritis. When the smooth cushion between bones (cartilage) breaks down, joints can get painful, swollen and hard to move.