Tension Headache Feels Like Bruise Behind Ear

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The causes of tension-type headache are still uncertain. Although tension-type headaches were once thought to be primarily due to muscle contractions, this theory has largely been discounted. Instead, researchers think that tension-type headaches occur due to an interaction of different factors that involve pain sensitivity and perception, as well as the role of brain chemicals (neurotransmitters).

Genetic factors are likely be involved in chronic tension-type headache, whereas...

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