[英文释义] Involuntary weight loss of greater than 10 percent associated with intermittent or constant fever and chronic diarrhea or fatigue for more than 30 days in the absence of a defined cause other than HIV infection. A constant feature is major muscle wasting with scattered myofiber degeneration. A variety of etiologies,which vary among patients,contributes to this syndrome. (From Harrison's Principles of Internal Medicine,13th ed,p1611).