Wei Laboratories, Inc.
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What is Headache?
Headache is pain in any region of the head. Headaches may occur on one or both sides of the head, be isolated to a
certain location, radiate across the head from one point or have a vise-like quality. A headache may be a sharp pain,
throbbing sensation or dull ache. Headaches may appear gradually or suddenly, and they may last less than an hour or
for several days.

Symptoms
The most common types of headache are the "primary headache disorders", such tension-type headache and
migraine. They have typical features; migraine, for example, tends to be pulsating in character, affecting one side of the
head, associated with nausea, disabling in severity, and usually lasts between 3 hours and 3 days. Rarer primary
headache disorders are trigeminal neuralgia (a shooting face pain), cluster headache (severe pains that occur
together in bouts), and hemicrania continua (a continuous headache on one side of the head).

Causes
Headaches are generally classified by cause:  
Primary headaches: a primary headache is caused by dysfunction or over activity of pain-sensitive features in your
head. A primary headache isn't a symptom of an underlying disease. Chemical activity in your brain, the nerves or blood
vessels of your head outside your skull, or muscles of your head and neck — or some combination of these factors —
may play a role in primary headaches. Some people may carry genes that make them more likely to develop such
headaches.

Secondary headaches: a secondary headache is a symptom of a disease that can activate the pain-sensitive nerves of
the head. Any number of conditions — varying greatly in severity — may cause secondary headaches.

Alternative Medicine
There is a significant progress using alternative medicine in this area.
If you want a referral of an expert alternative medicine practitioner in your
local area, please use our free referral service by calling our toll-free at
1-888-919-1188, or e-mail us to wei@weilab.com, or click the button
at the right to have us contact you.

Information gathered from the Wikipedia.com
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