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Fig. 2

Referred 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 (*)