Definately get another opinion! Croup is croup and VERY different to asthma! Croup is caused by an illness (which can be obvious or not), and is due to small airways not being able to cope with the slight swelling of the throat before or during an illness. I suffer Adult croup, due to congenital narrow airways, it is rare because as airways grow you usually stop getting croup, this isnt so with asthma. Croup is usually only present at certain times, and when watched closely, is predictable (mine is change of seasons where weather varies greatly day to day) and there are usually long stretches where the croup isnt present (not necessarily so in severe cases) Croup can be just as dangerous as asthma in its severe form, it nearly killed both me and one of my younger brothers (we both had the most severe form as kids)

Puffers can be helpful, but using them constantly can cause dependance. I feel that if you have moved interstate that it may very likely just be your DS adjusting to the new climate If your son seems to be stuck in a cycle of croup you could possibly ask for a weeks course of low dose prednisolone, this sometimes help to set me right if i get into a bad cycle.

I wouldnt worry too much, alot of kids get croup...... as long as your DS doesnt get blue lips etc during an attack. Turning on the hot tap in the bathroom and steaming up the room will help him breathe easier through the attack.

All the best for you and you son