looking for a connection

I take care of my grandson who is treated for acid reflux.  He is 7 months old and has just started on fruits and vegetables.  Within a week of these new foods he had a terrible diaper rash which caused him to cry as soon as he

was wet.  We're treating him for the diaper rash and have gone back to cereal and only one serving of fruit/veg. per

day until we talk to his doctor.  Could this be related to acid reflux?  Otherwise he is a very pleasant baby and a good eater and sleeper.  His only real symptoms are some vomiting and a wheezing sound when he coughs.  He does take 15ML of Ranitidine.