There are many different kinds of headaches: tension headache, migraine headache, cluster headache, sinus headache and chronic headache.  Tension headaches occur in women twice as much as in men while women are 3 times as likely as men to develop migraines. Tension headaches are the most common and account for 75% of all headaches.  The majority of people who suffer from tension headaches have episodic headaches, which occur 1 or 2 times per month on average. However, tension headaches can also be chronic. Chronic episodes that last for more than 15 days per month affect only 3% of the total population, according to the Tension Headache Foundation.

It is not uncommon for a Headache to last from 30 minutes to 7 days.  They vary from the infrequent episodic annoyance, to the persistent severe and sometimes disabling chronic medical condition.  In the vast majority of cases a headache though painful is not a sign of a serious underlying illness.  The brain itself is insensitive to pain.  Rather it is the surrounding muscles, blood vessels and tissues layering the brain where the pain originates.

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