I don't know about you but I noticed since i've been off methadone for 4 months or so that methadone really, really made me crave sugar. I mean, opiates in general did, but that's almost all I ate, literally I would crave sugar, I would have to go out to the store and buy some candy or something sweet. I hardly eat sweet stuff anymore, but I think that sugar makes your skin more oily and also when I first started methadone I used to actually get high and would sweat constantly. That and the unhealthy appetite methadone gives you is probably why, have you asked the clinic doctor or your counselor?