Definition: The basis for initiation of a treatment for a disease or of a diagnostic test; may be furnished by a knowledge of the cause (causal indication), by the symptoms present (symptomatic indication), or by the nature of the disease (specific indication).
[L. fr. in-dico, pp. -atus, to point out, fr. dico, to proclaim]
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Examples: glitazone, GI cocktail, etc.