Summary:
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A '''tension headache''' (renamed a '''tension-type headache''' by the [[International Headache Society]] in 1988) is the most common type of primary [[headache]]. The [[pain]] can radiate from the lower back of the head, the neck, eyes, or other muscle groups in the body. Tension-type headaches account for nearly 90% of all headaches. Approximately 3% of the population has chronic tension-type headaches.
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A '''tension headache''' (renamed a '''tension-type headache''' by the [[International Headache Society]] in 1988) is the most common type of primary [[headache]]. The [[pain]] can radiate from the lower back of the head, the neck, eyes, or other muscle groups in the body. Tension-type headaches account for nearly 90% of all headaches. Approximately 3% of the population has chronic tension-type headaches.
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