Dyscrasia is a nonspecific term that refers to a disease or disorder, especially of the blood.
Before modern medicine, it meant an imbalance of four body fluids: blood, bile, lymph, and phlegm.
Watson HG, Craig JIO, Manson LM. Blood disease. In: Walker BR, Colledge NR, Ralston SH, Penman ID, eds. Davidson's Principles and Practice of Medicine. 22nd ed. Philadelphia, PA: Elsevier; 2014:chap 24.
Update Date 2/13/2015
Updated by: Rita Nanda, MD, Assistant Professor of Medicine, Section of Hematology/Oncology, University of Chicago Medicine, Chicago, IL. Review provided by VeriMed Healthcare Network. Also reviewed by David Zieve, MD, MHA, Isla Ogilvie, PhD, and the A.D.A.M. Editorial team.