Yes, I have it quite severely now that I have finally been diagnosed as hypothyroid (TSH in range, but rock bottom T3 and low T4). Yet, I am on a grain of Armour thyroid and so far no improvement (but then T3 still low). I suspect I have been hypo for a while but have just had TSH testing. I have had symptoms since teens.
I used to have asthma (post-viral) and the only medication that cleared it was Zyrtec and upping magnesium. However, I slept too soundly and was often alone with small children so I eventually weaned off the Zyrtec only to have severe dermotographia as a side effect. Now it all makes sense!
Keep up the good work!