complication. The British Medical Association Illustrated Medical Dictionary. Dorling Kindersley. 2002. p.140. ISBN0-7513-3383-2. A condition resulting from a preceding disorder or from its treatment.
complication. Dorland's Illustrated Medical Dictionary (32nded.). USA: Elsevier Saunders. 2012. p.398. ISBN978-1-4160-6257-8. 1. a disease or diseases concurrent with another disease. 2. the concurrence of two or more diseases in the same patient.
"complication", Physicians' Desk Reference, 2006, ISBN978-1563635267, A morbid process or event occurring during a disease that is not an essential part of the disease, although it may result from it or from independent causes.
"complication", Merriam-Webster Collegiate Dictionary (11ed.), Springfield, Massachusetts, USA: Merriam-Webster, Inc., 2003, ISBN9780877798101, a secondary disease or condition developing in the course of a primary disease or condition
"complication", Concise Oxford Dictionary of Current English (8thed.), New York: Oxford University Press, 1990, ISBN978-0198612001, Med a secondary disease or condition aggravating a previous one.
sequela. The British Medical Association Illustrated Medical Dictionary. Dorling Kindersley. 2002. p.505. ISBN0-7513-3383-2. A condition that results from or follows a disease, disorder, or injury. The term is usually used in plural (sequelae) to refer to the complications of a disease.
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