A Headache is defined as a pain in the head or upper neck. Primary headaches include migraine, tension and cluster headaches. Secondary headaches are those that are due to an underlying structural problem in the head or neck. There are numerous causes of this type of headache ranging from bleeding in the brain, tumor, or meningitis and encephalitis.The most common type of headache is a tension headache. They are often related to stress, depression or anxiety
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