I wear a sleeve for mild lymphedema. I just started getting a warm red rash on my upper arm, and spotting blotches on lower inside arm. The rash is not raised. It reminds me of rashes I have had in the past if I would walk for a little while or even riding a golf cart from the vibration. When I walked, I got it on the insides of my legs, and I would have to scratch. On the cart, it would do the same to my back. The difference between now and then, I use to get sick in the stomach at the same time I got the rash. Usually it would disappear in a few mins. I haven t been wearing my sleeve all day during the holidays. My upper arm has one big solid blotch.
Hi, It appears from your query that you get Cholinergic Urticaria. It is a common condition caused by bursting of allergy producing cells known as \"mast cells\" due to certain aggravating factors present in the environment. As the chemical inside them is released it produces a rash which you have mentioned. There can be multiple factors producing this condition which are included in day to day life and sometimes it is really difficult to find one exact cause. In your case you are correlating it with exercises, hot climate, spicy food. So it is better to stay away from the offending factors. The long term effective treatment for this is by oral anti histamine like loratadine under medical advice. It is one of the Chat Doctor. Take care.