I had severe carpal tunnel when my thyroid was low.
(many years ago).

I find today when I have some numbness that a Salonpas patch on the inner wrist (where the tunnel is) will take down inflammation quickly for me. In a day or two. I only have minor flares...playing Bejeweled typically sets me off. But Angry birds do not. Normal computer use does not bother me at all. Gardening or twisting the wrist and hand sewing alot seems to bother me. I had to give up crochet and needlework. Magnesium lotion at night on the inner arms also
helps me quite a bit.

I sometimes still wear my braces at night, but then only very occasionally. Sometimes not even once a month. It depends on my activity level.