[JojoFatsani]

The "wearing 24 hours a day" plus the infected-looking wrist is a red flag on this article. I know it does sleep tracking, but that's not worth the bacteria that you probably get by wearing it overnight. Take it off and charge it overnight - also make sure to clean it occasionally.

[rpgbr]

Most likely dermatitis, not bacteria infection. Weirdly, it didn't happen when I was using Huawei Band.