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Causes of Sinus Headache and Migraines
By | July 11, 2008
Sinus headaches can be the result of a sinus infection or allergies. Often following a cold or flu, sinus headaches are caused by inflammation of the sinus passages, air cavities located in the bones behind and above your nose. As the sinuses become clogged or infected, the increase pressure causes your head to ache.
Although both the disease have a common symptom of headache but causes of sinus headache and migraine are different. Migraine headache is a primary headache disorder with, almost certainly, a genetic basis. Activation of a mechanism deep in the brain causes release of pain-producing inflammatory substances around the nerves and blood vessels of the head.
The precise mechanisms of a migraine headache are not completely understood. There appears to be general agreement, however, that a key element is changes in the blood flow within the brain due to a variety of triggers. The most widely accepted hypothesis of migraine suggests that a migraine attack is precipitated when pain-sensing nerve cells in the brain (called nociceptors) release chemicals called neuropeptides. At least one of the neurotransmitters, substance P, increases the pain sensitivity of other nearby nociceptors.
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