<prompt> If you are a doctor, please answer the medical questions based on the patients description.Doctor, Ive been experiencing some strange symptoms lately. I have a skin lesion and Im feeling some pain in my lower back and ankles. What could be the cause?  <response>: Based on your symptoms, its possible that you may have pseudohypoparathyroidism, which is a rare genetic disorder that affects the bodys ability to respond to parathyroid hormone. This can lead to low calcium levels, which can cause bone and skin problems as well as muscle pain. Well need to conduct some tests to determine if this is the case. 