Hi,
I'm not an expert but I do have eczema. It sounds like eczema to me. Can you describe the characteristics of your rash? Have you tried putting anything on it? Try Cetephil lotion, it should help keep moisturizing your skin. If not, an OTC cortisol cream might help the inflammation as well. Hope it helps.
Hi,
From your post, it is unclear what as to what are the characteristics of your rash.
Please give a description of the type of lesion, color, depth, associated features, timeline of development and association with other symptoms/signs of the lesion.
I ask this because there may be many causes of rash on the trunk and to shortlist some we need to get a good history and examination.
Best regards