Deferral from adsc at Glencorse?

My son attended glencorse on wed 18th May but was deferred for 3 years because of eczema-Can I explain. In March he had a small rash in the creases of his arms. I did tell him that it could be the lacoste shower gel which i had just purchased.He then went to the doctors and the doctor gave him some cream.He used the cream for three days and the rash went completely.When he saw the doctor at glencorse he had no rash at all (of which i took photos on his return.) he deferred him for three years.He was inline for an A grade according to his recruiters.He is appealing and has a doctors appointment on Monday as he is absolutely devasted because this is all hes wanted to do since he was a child.Can i also add he did have eczema as a baby.I would appreciate any commemts or advice Kind Regards