I'm not sure, but should silver sulfadiazine be used to treat diaper rash?

Use it often: I use this often when the diaper rash has more of a burn like quality than a yeast infection. Works fine.

Can be used.: For diaper rash keep baby's skin clean & dry. Change diaper as soon as it's soiled or wet. For healing allow baby to go without diaper for periods of time so affected area can air out. Avoid tight diapers or airtight covers over diaper. Meds your Dr. might recommend include antifungal cream (for fungus), a steroid cream (for significant inflammation) or an antibiotic (for bacterial infection.)