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When the Bladder (Pang Guang) is diseased, there is swelling and pain on one side of the lower abdomen. Pressing with the hand creates the urge to urinate but it cannot be done, accompanied by heat in the shoulder. If the pulse is sunken, there will be heat on the lateral side of the little toe, the posterior aspect of the leg, and behind the ankle. If the pulse is sunken, select Weizhong (BL 40). When the Bladder is distended, the lower abdomen is full and qi stagnation causes difficulty in urination (Qi Long). If the disease originates in the Bladder, there is pain in the tendons of the back and urinary obstruction. After five days, it transmits to the Kidney (Shen), causing pain in the lower abdomen, waist, and spine, and soreness in the calves. One day later, it transmits to the Small Intestine (Xiao Chang), causing distension. One day later, it transmits to the Spleen (Pi), causing blockage and obstruction, body pain, and heaviness. If the condition does not improve after two days, death occurs. In winter, death occurs at Ji Ming time (1:00–3:00 AM); in summer, it occurs at Xia Bu (late afternoon, or sunset according to some texts). When Jue Qi (Rebellious Qi) lodges in the Bladder, the patient dreams of traveling.

The Foot-Taiyang Bladder Meridian (Zu Tai Yang Pang Guang Jing) originates from the inner canthus of the eye, ascends to the forehead, and intersects at the vertex. Its branch goes from the vertex to the supraorbital angle. The main straight line enters the brain from the vertex, emerges separately, descends along the neck, follows the medial aspect of the shoulder blade, runs alongside the spine, reaches the middle of the waist, enters the interior muscles, connects with the Kidney, and belongs to the Bladder. Another branch descends from the waist to converge at the anterior and posterior orifices, passes through the buttocks, and enters the popliteal fossa. Another branch separates from the medial shoulder, descends through the hip (or lung, according to another version), passes through the greater trochanter, follows the posterior-lateral border of the thigh, passes through the popliteal fossa, descends through the calf muscle, emerges behind the lateral malleolus, follows the Jinggu point (BL 64), and reaches the lateral side of the little toe. When this meridian is disturbed, diseases occur: headache as if rushing upwards, eyes feeling as if they are falling out, neck feeling as if being pulled, spinal pain, waist pain as if broken, inability to flex the thigh, a sensation of knotting in the popliteal fossa, and a sensation of splitting in the calf; this is called An Jue (Ankle Reversal). This meridian primarily governs diseases generated by the sinews: hemorrhoids, malaria, mania, epilepsy, pain in the head and vertex, yellow eyes, tearing, nasal congestion or epistaxis, pain in the neck, back, waist, sacrum, popliteal fossa, calf, and foot, and dysfunction of the little toe. When the qi is excess, the Renying (ST 9) pulse is twice as large as the Cunkou (Radial) pulse; when deficient, the Renying pulse is smaller than the Cunkou pulse.

When the Sanjiao (Triple Burner) is diseased, there is abdominal distension and fullness of qi, with the lower abdomen being particularly hard, inability to urinate, and a sense of urgency. If the fluid overflows, it becomes edema; if it stays, it causes distension. The diagnostic sign is located in the large collateral outside the Foot-Taiyang meridian, between the Taiyang and Shaoyang meridians, with redness visible in the vessels. Select Weiyang (BL 39).
If there is swelling in the lower abdomen and inability to urinate due to pathogenic factors in the Sanjiao, one should examine the large collateral of the Taiyang meridian. Observe for constricted pulses and small collaterals of the Jueyin meridian that are knotted with blood. If the swelling extends up to the epigastrium, select Zusanli (ST 36).
When the Sanjiao is distended, qi fills the skin, making it bulging and firm but not painful. Heat in the Upper Jiao leads to Lung Wei (Lung Asthma/Atrophy) due to coughing. Heat in the Middle Jiao leads to dryness/hardness (of stool). Heat in the Lower Jiao leads to hematuria.

The Hand-Shaoyang Sanjiao Meridian (Shou Shao Yang San Jiao Jing) originates from the tip of the ring finger, ascends between the fingers, follows the dorsal wrist, emerges between the two bones of the forearm, ascends through the elbow, follows the lateral aspect of the arm, ascends to the shoulder, crosses behind the Foot-Shaoyang Gallbladder Meridian, enters the Supraclavicular Fossa (Quepen), intersects at the Chest Center (Danzhong), scatters and connects with the Pericardium, descends through the diaphragm, and extensively belongs to the Sanjiao. Its branch rises from Danzhong, emerges from the Supraclavicular Fossa, ascends the neck, runs behind the ear, goes straight up to the supraorbital angle, then curves down to the cheek, reaching the infraorbital region. Another branch enters the ear from behind the ear, exits in front of the ear, passes in front of the Guest Master point (Shangguan, GB 2), intersects at the cheek, and reaches the outer canthus of the eye. When this meridian is disturbed, diseases occur: deafness, buzzing tinnitus, throat swelling, and pharyngeal obstruction. This meridian primarily governs diseases generated by qi: sweating, pain in the outer canthus, cheek swelling, pain in the area behind the ear, shoulder, upper arm, elbow, and lateral arm, and dysfunction of the ring finger. When the qi is excess, the Renying pulse is one times larger than the Cunkou pulse; when deficient, the Renying pulse is smaller than the Cunkou pulse.