Zeng, a 25-year-old worker, sought medical attention in April 1992. He complained of persistent penile pain after several instances of sexual intercourse following recovery from a severe common cold. Although painkillers provided temporary relief, they could not eradicate the pain. Symptoms included mental fatigue, lack of strength, dry mouth with a desire to drink, blurred vision, soreness and numbness in the limbs, a pale red tongue with thin coating, and a fine, wiry, and rapid pulse. The treatment plan was to nourish blood, relax tendons, and alleviate pain. The original formula of Peony Root Liquorice Root Decoction was prescribed:
Peony Root 90g, Prepared Liquorice Root 10g
. After taking 3 doses, the pain was alleviated, and after continuing with 6 more doses, he was cured.