hypochondria
Pronunciation: "hI-p&-'kän-drE-&
Function: noun
Etymology: New Latin, from Late Latin, plural, upper abdomen (formerly regarded as the seat of hypochondria), from Greek, literally, the parts under the cartilage (of the breastbone), from hypo- + chondros cartilage
: extreme depression of mind or spirits often centered on imaginary physical ailments; specifically : HYPOCHONDRIASIS

(from "LOST")