the nasal sound and snoring are what mine did too.....alog with lovely green snot permenently dripping down....and this was when they were free of dairy in their systems!!
from my own reactions, I know that when I am full of stuff my body does not like, then all my 'secretions' (yack word, but covers it all I think) get thicker......breathing is hard, I wheeze, DH says I dont; snore so much as snuffle a lot in my sleep, my hearing is crap!.....I need people to look at me when they talk.....half my understanding is on seeing their mouth move so I can lip-read.
DS1, altho not ever confirmed as milk-allergic, suffered excema and huge tonsils and adenoids and glue ear......when I dropped his dairy intake he had a marked improvement. luckily as a family tho, as we have so many milk-problem people, we have a dairy-light diet anyway. it clearly helps all of them (even DD1 suffers excema if she has a 'build-up').
misdee, keep a diary for the next two week, take any pics of any reactions, draw a diagram of her body and mark the places where reactions come up.
when this was happening with DD2, and we were in and and of hospital with her, I still had a fight to get her DX'd with it. prepare for it.......for some reason they think that it is too rare to consider as a possiblity.....I have had many people tell me that they were ignored, brushed off, looked at as tho they are mad. and then, they get a proper DX AFTER a full on allergic shock episode.
on my part, DD2 had to lose 4lbs in weight in one week, be pumping both ends with vomit and diarhoea, be very floppy, spots all over (hives!), all tests for tummy bugs come up negative, and then my MIL shouted at the doc (condescending wanker man implying I was obviously mistaken in how bad she was and previous weight etc), so he 'humoured us' (his words) and tested her blood and poo for markers of milk allergy (the poo shows up lactose and someting else.....not sure if blood??).
he apologised and half grovelled at me and MIL when it came up positive.........and the difference in DD2 in just 2days of being on an exclusion diet was astounding.
now of course, with hindsight, I wish I had listened to myself more and taken it upon myself to self-treat at home, but I was younger, there was no mumsnet..., and of course I believed all the medical proffessionals as having a font of all knowledge and clearly knew what they were talking about.
I soon learnt!