Hello, I am a bit worried. I have been using a hot water bottle on my tummy and a couple of weeks ago i noticed a mottled appearance. There was also a burning feeling. I continued to use the heat bottle but not directly on the affected area. Today I read it could be erythema ab igne and so have totally stopped the heat bottle. There is a bit of pain. I am now using some aloe vera gel. I was worried as i read that it can sometimes turn into cancer.I also notice this type of mottling on my arms when i do the dishes in hot water (i wear rubber gloves). I am on thyroxin for HAshimotos.thank you for advise