Hi Siobhan
Long time no speak! I really must try and get back into the forum now I'm back from holiday!
I have treated a few clients with asthma, and obviously concentrate on the lung reflexes. Work the lungs in all directions, and also use the lung to spine link (ie. link any congested areas in the lungs across to the spine). I've also found with asthma clients that they don't notice always notice their improvement, so to measure ask them how often they are using their inhaler (after a few treatments). They are often surprised tha tthey are using them less but hadn't realised until I asked! Of course as reflexologists we should never advise someone to use their inhaler less or stop using it, but you know that!
Sarah x