Fig. 2From: Referred pain from myofascial trigger points in head and neck–shoulder muscles reproduces head pain features in children with chronic tension type headacheReferred pain from active TrPs in upper trapezius (a), sternocleidomastoid (b), temporalis (c), superficial masseter (d), suboccipital (e), combined suboccipital-upper trapezius (f), levator scapulae (g), and superior oblique (h) muscles in children with chronic tension type headache. *Note that the posterior referred pain in figure f comes from the suboccipital muscles (+) and from the upper trapezius (*)Back to article page