I also have a nasty dry cough and throat tickle that wakes me up ..
I too have had the same for months now my DH also .we think and have researched it that the chem trails , the aerial spraying they are doing are making us sick, day and night we are bombarded with them CA is really sprayed a lot.If you do some research you will find much up there its a program called Project Cloverleaf .Tests of the soil and ground water have shown many toxins present in what they spray .They are spraying all round the world not just in the US . I get Head aches, sinusitis, eyes are itchy red and sore,lethargy, and rashes ..Its about time the media got hold of it as it could also be causing the outbreak of tourettes symptoms .
You sound like my twin...Im finally starting to feel better now after 3 rounds of anti-biotics. I've also been rinsing my sinus out with a saline solution I have something like a nettie pot which i use everyday..it really helps. You might want to try using something similar. I found if I took Reactine or any decongestion meds it only mde it worse. Good luck...