I've got one to shows up after like 2 days of wearing it and then takes a week to go away. I take it off to shower and charge it when it needs it but wear it to work.
I also have a latex allergy. I constantly switch which arm the watch is on because I feel that it's directly caused by the band. I plan to get a new band but want to determine exactly what is causing the reaction so I don't waste my money. Mine starts off red, sometimes itches, then turns brown, dries up, flakes, then heals.
That sounds like the same rash I would get, but I don't remember it itching. I found that loosening the band by one notch and removing it when washing my hands (as well as thoroughly drying my wrists)- that seems to have resolved the issue. As of right now it is completely healed and has been for awhile. Good luck!
So I've replaced my strap and put a transparent sticker over the heart rate monitor for about 2 weeks now. the strap has fixed the issue around my wrist but the mark where the monitor is came back after about a week. I'm wondering if this may be the laser itself firing that may be causing the issue. I've looked onto it quickly and theres plenty of forums and websites talking about this from a few manufacturers, including Garmin, Fitbit and Polar.
I'm going to let my current rash settle back down again, i've turned off the heart rate monitor, and will see if the issue comes up again.
That’s exactly what has happened to me - I’ve worn the watch pretty much constantly since I got it last year in May, on my left wrist, including shower and swimming, only removing to charge, and have had no problems until about 4 weeks ago. The rash became very sore and red, like other images I’ve seen on here.
I went to doctor who gave me anti-fungal + hydrocortisone cream to clear it up, which it did, after about a week of treatment, but since I moved the watch to my right wrist in the meantime, the rash has now started there too.