I believe the allergy and/or cold symptoms are SCLS - I've got them full time, too. I think someone on this website has stated that is the fluids leaking -
On another note, I can relate to your anger & frustration with the doctors - PLEASE contact Dr. Greipp. Many of the doctors I saw locally wanted to give me THE answer, and when they couldn't, were bored & did not want to move any further with or for me. Mayo Clinic is the total opposite of that, they dig until they find answers, and it did not take years. (my profile explains what a godsend my visit was for me)
I also have the low thyroid, and an endocrinologist found cortisone/cortisol numbers to be odd (tied to SCLS???)I'm going to NIH in May (follow-up on SCLS study) with this new data and for further testing.
Good luck to you and your family, and please keep your chin up -