Re: Coughing when running around?
I think the only way to know if it IS asthma is to have a pulse oximeter reading when he's having the "attack". But if the coughing doesn't keep going after he settles down, then things are probably OK, and you don't need any more intervention.
My DS has asthma that presents as coughing, too. We didn't know it at first, either, and thought he had a lingering cold. When he couldn't stop coughing for more than 10 seconds, we brought him to the ER, and they had to admit him for 2 days because it was so bad. I didn't know at the time that it was asthma, so BOY, did I feel bad. But I can't beat myself up over it, because I didn't know.
I'd say you're doing the right thing....talk to your doc, and bring up "asthma" when referring to the coughing. Your doc should be able to help you out.