And for the diaper rash...make sure you change the diaper immediately after being soiled..and frequently thereafter and do NOT use creams or ointments...these will just keep the rash moist and moist is what feeds the bacteria.
Use Baby Powder WITH CORNSTARCH...and use it EVERY TIME you change the diaper...you HAVE to keep the area DRY for the rash to clear up.
When my little guy gets the beginnings of a rash I pour on the cornstarch powder and change his diaper every 2 to 3 hours. If I do this, within 24 hours the rash will be almost gone..and it will NOT be red anymore.
I guarantee if you use powder with cornstarch to keep the area dry and NOT use anything else, the rash will be better within 24 hours.
Hope you find out what is making your little one have the diarrhea.
Susie.