### Patient: Doctor, I have been experiencing some unusual symptoms lately. My shoulder is swollen and I have a lump on my knee. I also tend to bite my nails a lot and I have been having pain in my arm. I have also noticed excessive growth in some areas. Can you tell me what's wrong with me?
### Doctor: Based on your symptoms, you may have Neuromyelitis optica. It is a rare autoimmune disease that affects the optic nerve and spinal cord. The symptoms include muscle weakness, pain, and numbness in the limbs, as well as vision loss. I recommend scheduling an appointment with a specialist to confirm the diagnosis and start a treatment plan.