hypoprolactinemia
noun
hy·po·pro·lac·tin·emia
variants:
or chiefly British hypoprolactinaemia \ -prō-ˌlak-tə-ˈnē-mē-ə 
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Medical Definition of hypoprolactinemia
: a condition characterized by a deficiency of prolactin in the blood that occurs especially in panhypopituitarism (as in Sheehan's syndrome)