A disease is an abnormal condition affecting the body of an organism. It is often construed to be a medical condition associated with specific symptoms and signs.

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disease /dis·ease/ (dĭ-zēz´) any deviation from or interruption of the normal structure or function of any body part, organ, or system that is manifested by a ...

noun 1. a disordered or incorrectly functioning organ, part, structure, or system of the body resulting from the effect of genetic or developmental errors, infection ...

CDC Centers for Disease Control and Prevention - Your Online Source for Credible Health Information

dis·ease (d-z z) n. 1. A pathological condition of a part, organ, or system of an organism resulting from various causes, such as infection, genetic defect, or ...

Diseases and Conditions information from the Centers for Disease Control and Prevention.

Infectious diseases, also known as transmissible diseases or communicable diseases comprise clinically evident illness (i.e., characteristic medical signs and/or ...

Are trans-fats linked to aggressive behavior? 3/28/2012 - New data on dietary trans-fatty acids (dTFA) indicate that they could be contributing to aggressive ...

Graves' disease — Comprehensive overview covers symptoms, causes, treatment of this thyroid disorder.