I would use wasting or wasting syndrome, according to your text.
Nothing to do with organs only, it's a multisystemic syndrome when referred to chronic poisoning

Wasting
…il supporto nei casi di epilessia con la scomparsa delle crisi convulsive, il supporto per diverse affezioni delle vie respiratorie, l'incidenza estremamente positiva sull'appetito e sul recupero di peso (si pensi all'anoressia, ma anche alla sindrome da deperimento organico - wasting syndrome -causata dall'Aids)
In:
http://www.mednat.org/aids/aids_canapa.htm

HIV wasting syndrome:
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).


http://eur-lex.europa.eu/Notice.do?mode=dbl&lang=en&ihmlang=...

- Acute classical swine fever must also be considered in case of suspected erysipelas, porcine reproductive and respiratory syndrome, coumarin poisoning, purpura haemorragica, post-weaning multisystemic wasting syndrome, porcine dermatitis and nephropathy syndrome, salmonella or Pasteurella infections or any enteric or respiratory syndromes with fever which do not

-L'eventualità di una forma acuta di peste suina classica deve essere presa in considerazione anche nei casi sospetti di erisipela, sindrome riproduttiva e respiratoria dei suini, avvelenamento da cumarina, porpora emorragica, sindrome da deperimento organico progressivo, sindrome da dermatite e nefropatia, salmonellosi o pasteurellosi, o qualsiasi altra sindrome enterica o respiratoria accompagnata da febbre, che non risponda ai trattamenti antibiotici.