Tension-type headaches may be caused by muscle tension around the head and neck. Chronic contraction of the temporalis muscle caused by the teeth clenching is one of the main cause.
Treatment: Using over-the counter pain medicines, prescription drugs, if having chronic or bad pain, avoiding things that trigger headache.
Statistics: The prevalence of non-migrainous headache is 10–25% in childhood and adolescence. Although tension-type headache and migraine are the two most common types of headache in children and adolescents, most articles address migraine headache.