It is a type of the Painful Obstruction Syndrome (Bi Syndrome 痹证). Other Pernicious Influences can also invade Channels, joints and muscles such as Wind, Cold, Dampness and Heat.

The common symptoms of Bi Syndromes are joints pain, stiffness and numbness. Other than these, Phlegm also causes patients anxiety, chest stiffness and purple tongues with dark spots. It is more seen around the elderly and these with Wind stroke.

Phlegm can also give rise to bone deformities. According to Chinese medicine, chronic rheumatoid arthritis or arthritis in general is seen as a form of Phlegm. As a reminder Phlegm occurs when the Body Fluids accumulate and become Stagnant during a long period of time. If they do so in the joints, this Phlegm manifests itself in arthritis and can further condense to form bone growths.