Why Fitness Trackers Can Cause a Skin Rash According to Aguilar, fitness trackers can cause irritation for a variety of reasons. One common culprit for that wrist rash? Wearing the band too tight.

A 50-year-old man presents to your office complaining of an itchy, worsening rash on his wrists and ankles for two months, that recently further worsened. He is otherwise healthy and takes no ...

The rash can affect any part of the body, for example the underarm area, between fingers and around the wrist, the inside of the elbow, buttocks, lower legs, knees, shoulder blades, the groin ...