Thank God you noticed it right away, Deb. As so many have said allergies are a scary thing. And to see such a reaction happen so quickly had to be very scary. I am so glad you were able to get him to the ER asap.
As Karen has said you can be allergic to anything. I had some testing a few years ago and some of the stuff that showed up were interesting. Also interesting is that some I have very mild to almost no reaction to but put 2 or 3 together and then I get a reaction.
And Deb we are very interested in what goes on with Hugito - he is a PT baby after all!