HI:) My son has been egg allergic for 9 years, although he has outgrown other allergens over the years including, as hard as it is to believe peanuts. However, eggs are still his most severe allergen...and we are extremely careful as he has had a severe reaction in the past. A food allergy can develope at any time, despite prior exposures...most are more allergic to the white, my DS is + to both white & yolk.
My advise, avoid egg completely until you've seen an allergist for testing & an action plan as to how/what to avoid...also, please call the ped today and request an epi-pen that stays w/ your son at all time...plus carry benadryl!
The raspy voice you mentioned worries me, b/c it means his airway was swelling...that is not a good thing!
Hugs!
PS there is an online yahoo group for no. VA that you may find helpful and can ask around about allergist, etc.
I forgot to add, my son was tested at 9 months old...testing can be done, maybe you can just call for an appt. to the allergist yourself.