bilateral vasomotor responses and sweat gland activities under the control of cervical sympathetic nerves were examined simultaneously by photo-electric plethysmogram ( ptg ) and skin potential reflex ( spr ) in patients with nonspecific complaints in the head-cervicobrachial regions such as headache , dizziness , tinnitus , pain or stiffness of the neck and shoulder , and dullness or numbness of the arms .
C0018681
headache
C0030193
pain