Untitled This Disease Information Center site provides information resources on physical and mental diseases, disorders and conditions. All of the resources referenced on this site are categorized, described and rated by our editorial staff. Disease , Disorder , Distemper , Malady , Affection . Disease is the leading medical term.
Disorder means much the same, with perhaps some slight reference to an irregularity of the system.
Malady is not a medical term, and is less used than formerly in literature.