A medical condition is a state resulting from illness, disease, injury, disorder, or congenital anomaly, or from a non-pathologic cause such as pregnancy. The maintenance and restoration of a state of good health and wellbeing through the diagnosis of disease and the treatment of medical conditions is the focus of the medical profession. Engineers contribute to this goal by developing medical instruments, devices, and implants. To collaborate with the medical profession more efficiently and innovate more effectively, engineers should understand basic information about the medical condition requiring treatment. Several common medical conditions are included in this Bio Lexicon.