L.G.
Hi,
I am sorry you and your daughter have been through all of this! I don't know much about chronic coughs, but your story reminded me a little of me. I was congested and kept being told that I had allergies. I took a blood test and it came back negative. Didn't make any sense to me although allergy meds didn't help me at all. I had terrible post nasal drip. I ended up seeing an ENT who did the scratch test for allergies. I am not allergic to anything. However, I was diagnosed with Non-Allergic Rhinitis or Vaso Motor Rhinitus.....anyway, what it means is that irritants cause allergic reactions in me. It looks like allergies and when the pollen count is high, I have more trouble. There are other triggers though. Chemicals, pollutants, hormonal shifts, changes in barametric pressure. I am sure to be one of those old ladies that knows when it will rain! I do sleep with an air purifier in my room. It helps especially in Spring and Fall. May and September are my bad months. I the winter dry air is irritating, in the summer, it's the humidity. My ENT explained that any time you have nerves and blood vessles together you can have trouble. In the head, it's headaches, in the nose it's VMR in the gut, it is Irritable Bowel. There are meds that help, it is very individual and I do not know what is approved for kids. I take Astelin (now called Astepro) and Singulair. I hope this helps, feel free to send me a message if I confused you or you have a question. I am sorry about the spelling, my 3 year old is calling me so I am trying to rush!! Best of luck, I hope you figure this out soon so you and your daughter can rest.