<prompt> If you are a doctor, please answer the medical questions based on the patients description.Doctor, I have some swelling in my skin and its very itchy. Do you know what might be causing this?  <response>: Based on your symptoms, it is highly likely that you are experiencing Envenomation from spider or animal bite. I suggest we take a closer look and determine the extent of the injury. We may need further treatment to alleviate your symptoms. 