The Fitbit rash first made headlines back in 2014 – there was a nationwide recall of the Force wearable fitness tracker due to reports of a wrist rash. Today, many Fitbit wearers continue to report rashes with the company’s latest line of fitness trackers. It might be due to contact dermatitis, which is a reaction that can occur anytime there is constant friction, pressure and sweat between the skin and another item, or possibly an allergic reaction related to a substance in the strap itself. According to Fitbit, the following four measures can help: keep your Fitbit clean; keep it dry; don’t wear it too tightly; give your wrist a rest by removing the band for an hour after extended wear.