How common is it that a food allergy causes cough and runny nose?

My 4 year old daughter has suffered with middle ear infections from day one and also has suffered with post nasal drip induced cough which then they say turned into asthma. Her ear nose and throat specialist thinks it could be a food allergy causing all these symptoms but she only gets the cough from Oct. till May or June all summer she does not cough a bit. She did test positive for mold and is going thruo with imunotherepy for it. Any suggestions or links that could be helpful? I really don't want to have her tested for food if it is not the reason for her being misserable. HELP please

Here are some links that I hope will be helpful. I've never known a food allergy to cause a runny nose or cough but then again you learn something new every day. Two of my children had food allergies but they always got a rash, . One of these two children also had childhood asthma which he luckily outgrew. We found out he was allergic to the dog and dust. I would suggest getting her tested for food allergies, then at least you can rule that out. The way they did it with my son was to put a thing with little needles on his arm, then dropped various food/liquid on his arm. Maybe you can ask the doctor to do you first, so that your daughter can watch your reaction, then she won't be so terrified. That's what I did with one of my children and she was fine when doing the tests.Anyways here are the links.
http://www.kidshealth.org/kid/health_pro...
http://www.kidshealth.org/kid/health_pro...
http://www.acaai.org/public/advice/foods...
These are only a few links. There are many more. I just went to Google and typed in the same question you asked. Good Luck.