Dyscrasia

four humours: phlegm, blood, yellow bile, and black bile. The imbalance was called dyscrasia. In modern medicine, the term is still occasionally used in medical context for an unspecified disorder of the blood, such as a plasma cell dyscrasia

yellow bile, and water (phlegm). These humors were believed to exist in the body, and any change in the balance among the four of them was the direct cause of all disease

Ayurvedic system, which both relate health and disease to the balance and imbalance of the three bodily humors, generally translated as wind, bile, and phlegm. This is also similar to the Chinese concept of yin and yang that an imbalance of the two polarities caused ailment.^{[citation needed}

paraproteinemia or monoclonal gammopathy.^[3]

peptic ulcers, are known for causing blood dyscrasia – leading to bone marrow failure in 1 out of 50,000 patients.^{[citation needed}