The Shang Han Lun has 397 sections with 112 herbal prescriptions, organised into the Six Divisions :
Tai Yang (greater yang): a milder stage with external symptoms of chills, fevers, stiffness, and headache. Therapy: sweating.
Yang ming (yang brightness): a more severe internal excess yang condition with fever without chills, distended abdomen, and constipation. Therapy: cooling and eliminating.
Shao yang (lesser yang): half outside, half inside half excess and half deficiency with chest discomfort, alternating chills, and fever. Therapy: harmonizing.
Tai yin (greater yin): chills, distended abdomen with occasional pain. Therapy: warming with supplementing.
Shao yin (lesser yin): weak pulse, anxiety, drowsiness, diarrhea, chills, cold extremities. Therapy: warming with supplementing.
Jue yin (absolute yin): thirst, difficult urination, physical collapse. Therapy: warming with supplementing.