It happened to me as well when using silicon wrap intensively.
Try to use different material that allows your wrist to breathe. I'm not sure that it is allergy, more like the fact the wrist skin cannot breathe thru silicon.
Me too, on the Galaxy Fit I got in the summer, it's been developing for the last few weeks, I'll be contacting Samsung this week. It seems to be a common issue?!
The Gear Fit I had at the beginning of the year was fine.
Saying not to get it wet or remove it often defeats the object of having a device which monitors your activity, analyses your sleep and is sold as waterproof!!
I will join the club. Have had the watch for over half a year and about a month ago:
It is just where the strap is... so i am also looking for a fix as I love wearing mine also through the night as I have sleeping troubles and like to track Why I sometimes wake up sorely.