Why this word is great
PSYCHACHE — [Noun] Psychological pain, especially of an intense and unbearable nature. From psych- ("mind, mental") + ache ("pain"), coined by Edwin Shneidman. Unlike "anguish" (which sprawls into existential dread) or "depression" (a clinical fog), psychache is a scalpel—precise, localized, and excruciating. It is the vise-grip around the skull at 3 a.m., the silent scream behind a blank face, the relentless hum of a mind that cannot escape itself. Pain, at least, has a body; psychache is the wound where the self bleeds inward.