<s>[INST] My 12 year old son has had this perfect circle of dry skin that is raised and redish for the past few months. It will not shrink nor to away. It seems to have escalated as of last night into birght red color still raised and red but with not one clear circle but one inside the circle that were very prominent, almist like a worm? Could this be ringworm? [/INST] Hi... Thank you for consulting in Chat Doctor. By what you quote this may be a - 1. Eczema which is increasing in severity.2. Ring worm3. Larva migransSkin conditions are best diagnosed only after seeing directly. I suggest you to upload photographs of the same on this website, so that I can guide you scientifically. Hope my answer was helpful for you.  I am happy to help any time. Further clarifications and consultations on Chat Doctor are welcome. If you do not have any clarifications, you can close the discussion and rate the answer. Wish your kid good health. Regards -  </s>