I am 69 year old female. Been relatively healthy. Gaulbladder/
Your anxiety is making things worse
Thanks for using the Ask a Doctor service.
I have gone carefully through your query. I would insist you to upload an image of the rash. I do not think that with the negative findings you need to worry about cancer. You need to understand that your anxiety is making things worse. In fact that is the primary concern.
I could perhaps guide you further if you could upload any medical notes that you have. I would await your response.