TL;DR Multiple Samsung Galaxy Watch users have reported circular red marks and alleged burns on their wrists directly under the sensor array.

Affected devices often suffer overnight battery drain, suggesting rogue background processing might be causing localized overheating that has somehow bypassed thermal limits.

While Samsung generally attributes rash-like symptoms to strap tightness or hygiene, fluid-filled blistering in some cases suggests potential thermal burns rather than skin irritation.

Samsung’s Galaxy watches have had their fair share of controversy. The recent Galaxy Watch 9 and Galaxy Watch Ultra 2 face slow charging due to thermal throttling , to the point where users have resorted to DIY charging fans to get the fastest charging speed. But we’ve now spotted a more concerning pattern: several users have come forward to share alarming photos of circular, red marks on their wrists, often accusing their Galaxy watches of overheating and burning them.

Reddit user ksima_03 complained that their Galaxy Watch 5 Pro burned them. The user routinely wears the watch to bed with a full charge, but this time they report waking to a dead watch that wouldn’t turn on and a rather nasty, burn-like mark on their wrist.

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