The Gall Bladder Meridian 膽經 is also called the Leg Shao Yang meridian 足少陽經.  It begins at the outer corner of the eye and branches into two, externally travelling up and down the side of the head, then it curves behind the ear into the top of the shoulder, down the side of the body, into the hip.  The other branch runs internally into the body through the neck and chest to join the gall bladder, then emerges to connect with the external branch, which runs down the outside of the thigh and leg to the tip of the fourth toe. A small branch goes towards the big toe to join with the Liver meridian.  

As usual, pain along its pathway, such as the the side of the head, chest, armpit, sciatica and the outside of the legs, can be treated with points on this meridian.  Since the Liver system is complementary to the Gall Bladder system, liver related issues such as eye and throat ailments can also be relieved using the gall bladder meridian. In addition, digestion problems are also within the realm of treatable symptoms.