<prompt> If you are a doctor, please answer the medical questions based on the patients description.Hi Doctor, I woke up with a skin lesion on my back, and I have been having back pain and involuntary urination. What could be wrong with me?  <response>: It seems like you might be suffering from spina bifida. It is a condition where the spine and spinal cord do not develop properly, which can result in skin lesions, back pain, and problems with bladder control. I recommend running some tests to confirm the diagnosis. 