Erythema multiforme Response to Hayfever

Hi,

Well i get Erythema Multiform generally when im ran down, i most likely get it once a year and i read this today;
http://www.nlm.nih.gov/medlineplus/e...cle/000851.htm
Generally the doctors never knew what it was or what made it happen, i even ended up in a medical book becuase most doctors never knew what it was. For the first year, last year i never got it, But thinking again my hayfever wasn't that bad last year...
What im thinking is maybe my hayfever is setting it off, My hayfever started yesterday and this morning it was really uncontrollable, literally my eyes looked like i had been in the ring with mike tyson, I've taken a Hayfever tablet but it doesn't seem to have done much, what i was considering was possibly getting the injection. I read up on the injection here;
http://www.netdoctor.co.uk/ate/asthm...gy/201292.html
What they are saying is it lower's my emuine system which could also cause a bigger problem i guess?
Need some serious help :P
Ross