Food Allergies, Food Intolerance or Food Sensitivity?

I make goat milk gelato, my sister-in-law (who has Crohn's disease) and is lactose intolerant can eat my ice cream. One question: id lactose intolerance usually associated w/ Crohn's? And another: sinnce doctors usually tell patients who are lactose intolerant to try goat milk, would the same recommendation apply to people who are allergic to cow's milk? It's my understanding that the molecules in goat milk are smaller and thus easier to digest. Do you know if the smaller molecules would also make goat milk less allergic?

I've tried many places for the answers and as yet have'nt found them.

Thanks

Bob Bada

Gelati di Capri