Oh dear Charmaine, I cannot help with why you are getting a reaction to icing sugar and it is very difficult not to come in contact with it, my only thought would be to invest in ’ The Mat " I do not use one myself but there is no need for icing sugar when you use it. Also Staples do food safe latex free gloves here is the link.
Hope your hands get better soon
Hilary
Hilary Rose Cupcakes http://www.facebook.com/?ref=tn_tnmn#!/hilaryrosecupcakes