R.S.
T.,
My daughter had similiar problems the first 4 years of her life. After several episodes and once she was old enough her doctor recommended that she have her tonsils and adenoids removed. Once removed the doctor commented that he had never seen adenoids as large as hers.
Different things I would do when symptoms would flare...prop up to sleep, humidifier, steam in bathroom before putting to bed, covered mattress and pillow with allergen covers, vick rubb downs, change out AC filters faithfully every month, removed most of stuffed animals from room. Avoid cigarette smoke and pet dander as much as possible.
Does your child appear to have allergies? If so, you might want to look into NAET (google). Non-advasive allergy testing that could help pinpoint allergy sensitivities. I did treatment with 2 of mine that were very sensitive to environmental allergens and saw a dramatic difference. It is a treatment you have to see to believe. Since treatment have been able to eliminate meds in one and cut meds in half in the other.
Child #4 had tubes and adenoids out when she was 2 to help with recurring ear infections and nasal issues. Once again discovered when adenoids removed that she also had very large adenoids. Hope this helps, good luck...