heartsink
n.— «Heartsink patients may fit into four categories, the editorial says. Dependent clingers, entitled demanders, manipulative help-rejecters and self-destructive deniers. They can overwhelm and exasperate their doctors by their behavior.» —“‘Heartsink’ patients overwhelm doctors” by Marilyn Dunlop Toronto Star Dec. 30, 1989. (source: Double-Tongued Dictionary)