<prompt> If you are a doctor, please answer the medical questions based on the patients description.Doctor, I have been experiencing lower abdominal pain for a while now. Along with that, I have also noticed some abnormal skin growth and itching on my skin. What could be the reason behind this?  <response>: Based on the symptoms you have described, you could be suffering from a condition called Osteochondroma. It is a bone tumor that can cause a skin growth and itching sensation. We will need to perform some tests to confirm the diagnosis. 