question: my 12 year old son has red blotchy rashes all over his body, it started as a red rash on his cheeks, then went all over. Its not itchy, he has no temperature and he doesnt feel sick. He is however has anaphylaxis to dairy and egg. No new foods have been introduced, washingliquid hasnt been changed. have given him his antihistamine, but it doesnt seem to be helping.