I will echo exactly what Kat says. AND...

With our daughter, we found out she is allergic to the cat in which is 100 years old, house dust, and fall leaves. Once winter comes, and we shut our windows, her nose starts to act up. Not as bad as she was when she was little though. She is 9 now. But if she is playing with the cat it will, or if her room isn’t dusted often she does. We too found that our daughter has mild to moderate asthma. She was diagnosed in kindergarten. Your child could have mild asthma if he is coughing so dry. BUT I think a big culprit of coughing at night is that darn postnasal drip in the back of their throats. Nasonex gave my daughter nose bleeds. Claritin NEVER touches her, and the others make her too drowsy. She says she would rather suffer with blowing her nose then feel that out of it. Here is what our respiritory specialist told us about the asthma triggers. My daughter lives with all these allergens. In the summer time, the windows are open and she can breathe fine. Winter comes, you are closed in. The allergies worsen. The nose starts to run. Causing that post nasal drip, that in turn causes that annoying cough. She is still ok. BUT then along comes some cold virus and ZAP, that is all her system needed. They described it as a bucket of water. Her bucket of water is full when winter comes and we are closed in and her nose is running. The "water" is to the tippy top. But never over flows. THEN comes that nasty cold virus, and you add that to your already full bucket of water and what happens? OVER FLOW! That is when we run into problems that require the nebulizer. Do you know what a nebulizer does? It is that little machine that you hook up a face mask to it with medicine in it that they breathe in to open their lungs. It breaks up the bad stuff in their lungs. They breathe much better after that and it usually makes the cough more productive. Also with the asthma my daughter is on a maintenance program that requires her to inhale what they call Advair Diskus. It is a disc that has meds in it that she inhales. It helps tremendously. Do you run a humidifier? The cool mist helps. AND the idea of wrapping them up and getting them some cold air helps. AND I just learned this from a nurse. If your child is having problems breathing, a WARM drink will help open the airway. Yep, old fashioned ways still exist. Also, we wound up having my daughter’s adenoids out when she was in first grade. Those are these nodule looking things in the back of your sinuses. Usually an Ears nose throat specialist does this, and recommends the tonsils coming out at the same time. My daughter only had the adenoids since she never suffered from strep. Since she only needed her adenoids out, she was an outpatient and came home that day. Her sinus infections stopped. She was CONSTANTLY getting a sinus infection then. Those stupid adenoids removed did wonders. She still gets some here and there but NOTHING like then. Here is the kicker. As you grow into an adult, the adenoids shrink! Such problems they are, and then you loose them anyway! SO those are a few of your options. They worked wonders with my daughter. Salt water in the spray keeps her infection free too. All else fails, I am trying to design a bubble suit for my daughter to live in. (ha ha ha) If I could I would! Keep us updated on what you find. You know at first I was devastated my daughter had one more medical problem in which she would require daily meds. for. I cried. But like CAH, I just sucked it up, got my crying over and educated myself in the world of asthma and allergies. You just think having CAH gives them this shield of protection against all other things happening to them.

Good luck!