Bi-syndrome is a disorder resulting from the obstruction of meridians, sluggishness of qi and blood circulation after the invasion of pathogenic wind, cold, dampness or heat, and characterized by pain, numbness and heaviness of muscles, tendons and joints or swelling, hotness and limitation of movement of joints. Rheumatic Rrthritis, Rheumatoid Arthritis, Osteoarthritis, tuberculous arthritis, pyogenic arthritis, muscular rheumatism, Sciatica, Gout, etc., may be classified and treated as discussed in this section.