Dairy and wheat allergy in my 4 year old my son has been diagnosed with asthma and allergies to dairy and wheat - we cut out everything that contains we are now on a gluten and dairy free diet - however when we went to the specialist he said the allergies

Physicians : Physicians usually rely on science and evidence to advise parents. It's interesting to speculate on causes but speculation is not evidence in the scientific meaning. Dairy and wheat allergies are diagnosed by specific tests and these allergies can be related to asthma and eczema. If the rash you are mentoining is eczema, it is impossible to say exactly what is causing it. Grapes may be exacerbating it and it is easy enough to eliminate that from a diet. Inhalation of 'salt water' alone for asthma has not been proven helpful based on evidence. Saline is commonly used to mix medicine with to allow it to be aerosolized in a nebulizer. Saline can be soothing to irritated membranes and may also have a placebo effect. Asthma and eczema sometimes do resolve as children get older.