Forerunner 965 and skin rashes / burn

I used Forerunner 745 for 3 years and I never had skin burns / rashes, whatever you call them.

I upgraded to Forerunner 965 about a month ago. And it is second time in these weeks that I got rashes / red patch on my wrist. The first time, it was almost like a burn where the skin was peeled off and I had to wait for a week for it to heal. It happened again 3 days back.

I always remove my watch during my indoor bike training, shower and for some time during the day. So I let my skin breathe almost every day.

For some reason, I am starting to believe that the sensor on 965 is doing this to my skin. Has anyone faced similar situation? What should I do?