On the medial aspect of the foot, in the depression posterior and inferior to the proximal metatarsodigital joint of the big toe, at the junction of the red and white skin.
Yuan-Source point of the Spleen Meridian. Shu-Stream point of the Spleen Meridian.
Abdominal distension, stomach pain, vomiting, diarrhoea.
Heavy sensation in the body, borborygmus, constipation, foot swelling, dysentry, haemorrhoids and fistulae, poor digestion, cholera, bi syndrome.
Fullness and oppression preventing the patient from assuming a reclining posture, distension in the chest and lateral costal region, very slow pulse, acute gastroenteritis, pain in the kidneys, lumbar pain preventing movement, heat diseases starting with pain in the head and face, fever with fullness, oedema, headache, extreme pallor (which is why this point is called "Great Whiteness").
Strengthens the Spleen, harmonizes and regulates the Spleen and Stomach, resolves dampness, clears Damp-Heat.
SP 3 is one of the major tonifying points of the body and is very commonly used. Clinically, Yuan-Source points are of great significance in treating diseases of the internal organs. Yuan-Source points are the sites where the Yuan (Primary) qi of the Zang-Fu organs passes and stays. Puncturing the Yuan-Source points stimulates the vital energy of the regular meridians, regulates the functional activities of the internal organs, reinforces antipathogenic factors and eliminates pathogenic factors. This method of treating diseases deals principally with the root causes. The Yuan (source) point from the affected meridian is often combined with the Luo (Connecting) point of the internally-externally related meridians in use. Shu-Stream points are where the qi starts to pour down the meridian. They are known to alleviate heaviness and pain in the joints. On Yin Meridians, Shu-Stream points are identical to the actions of Yuan-Source points.
Perpendicular insertion .5 - .8 cun.