12 AugHow to Recognize and Treat a Drooling Rash By Dr. Tanya In Infants (4 to 12 months), Medical InformationA drooling rash is just a skin irritation from the constant wetness of drool on an infant’s sensitive skin. I recommend a thin layer of aquaphor or petroleum jelly on the skin area. Generally aquaphor or petroleum jelly Read MoreShare: