Hay fever and Asthma?

[Geocentric]

Has anyone here (or family) had allergic rhinitis and gone on to develop asthma? DS (8yo) complaining about breathing lately - has had hayfever since little...

Pixie, 3 times in the last two weeks - twice after swimming and once after playground time at school (the nurse rang me). He says his chest feels tight and hard to breathe (didn't have noticeably laboured breathing, though). Over v. quickly, as soon as he stopped for a bit...

It is summertime over here and very hot at the moment, but he's never complained of this sort of thing before.

Thanks! I'll get it checked out... He's due for a paed. check-up, anyway.