HRS1992,
Whilst I left the UAS system in '02, I remember that from '00 we had to send all our potential students to OASC for medical. I know of one candidate who was not forthcoming with his medical history and failed to reveal his childhood asthma and incurred the wrath of the Chief Medical Officer at RAFC.
Previous to '00, initial medicals for UAS selection tended to be held at Station Medical Centres and were far less demanding in their requirements. As I've mentioned, this changed, which led to a far earlier filtering of those with potential problems.
Not that I buy into the medical theory completely, but the reasoning we were given was that childhood asthma can potential damage your lungs and may, I repeat may, cause problems during some future scenario. As I mentioned, this did not seem totally plausible to me.
As for those who got in with a history of childhood asthma, they had to prove to specialists that they were completely fit. I did have one student that went through this: he is currently flying Harriers. (But for how long!!)
In the civvy world I currently reside in there seems to be a plethora of inhalers.......!