The American Heritage Dictionary:

dis·ease n. 1. A pathological condition of a part, an organ, or a
system of an organism resulting from various causes, such as
infection, genetic defect, or environmental stress, and characterized
by an identifiable group of signs or symptoms. 2. A condition or
tendency, as of society, regarded as abnormal and harmful. 3.
Obsolete Lack of ease; trouble. [Middle English disese from Old
French des- dis-]

1. (n.) A pathological condition of mind or body:
· affliction
· ailment
· bug (slang)
· complaint
· condition
· defect
· disability
· disorder
· indisposition
· infection
· infirmity
· malady
· sickness
· trouble

Mike W.
Recovered Alcoholic