Babies can get crohns
Extremely rare though
Most tend to have allergic colitis
Which basically means they don't tolerate milk or other foods sometimes in their diet or the breastfeeding moms diet .
Once milk is pulled and replaced with milk free breastmilk ( the mom no longer eats milk products or soy etc ) or non milk based formula is given ( neocate elecare etc) then the kiddo heals up and tends to out grow by 1 year old