I agree with "flowerchild" and a possible environmental link. However, I also have a family history of asthma, eczema, hayfever, and bronchitis. You did not say if you have a family history of allergies to food, medicine or the environment. That would explain alot. If you don't have a familial link, then I agree, further testing is a definate. These signs and symptoms typically don't just happen for the sake of happening. Here are some other possible causes and tips that might help you environmentally. Do you have new or really old carpeting? The glue, backing or carpet material can be a trigger. Do you have gas appliances? The gas fumes and exhaust from them can pollute the air in your home. I open a window in my home once a day for a little while no matter how cold it is outside. The air in your home is more polluted than the air outside. Do you have pets? Pet dander or flea treatments can be a trigger especially if the pet likes sleeping with your child. Do you use candles? The different natural materials used to make them and give them their scents can be triggers. Do you spray air deodorizers around the house, especially after a diaper change? Items like Lysol, Oust, Glade, etc can be triggers. Is there a bookshelf near where your child sleeps? Bookshelves encourage dust mites which are triggers. Stuffed animals are in the same category as bookshelves, dust mites love living in them and are triggers. Try to learn his triggers. Look for patterns in the environment and your child's health. Is he worse or better at home, in the car, at daycare, at Grandma's, outside. Just something to think about. I don't know how other nurses feel about chewable/oral respiratory treatments but from what I have seen on my pediatric floor and with my nephew, a nebulizer is the best route. He can be expected to protest because that is what toddlers do best. Maybe he can see you get a neb with normal saline, then let him get a neb with the real med. Maybe you can let him help you hold it. Maybe you can decorate the tubing and chamber with stickers. Maybe you can try to do an activity with him like read a book or fingerpaint while getiing a neb. Try to be creative, not upset, because they will push your buttons and love you anyway!