I don't know if there is a correlation with my mental illness but I also have different writing styles. I have had banks refuse my checks because my signature does not match the signature on file. Also when I was working as a critical care RN I had to speak with an attorney who was representing my hospital in litigation. The attorney was reading my notes and asked me if I wrote those. Yes, I said. Who wrote this, he asked. I did, I said. But your handwriting is totally different from the earlier note, he said in confusion. Yes, I explained, the morning started with a stable patient and I had time to write my notes but the patient became unstable and I was very busy so my handwriting changed because I was rushed. He thought this peculiar.