<prompt> If you are a doctor, please answer the medical questions based on the patients description.Doctor, Ive been having numbness and tingling in my right hand for a while now, and its been getting worse. Im also experiencing weakness in my hand and forearm. Whats wrong with me?  <response>: Based on your symptoms, its likely that you have mononeuritis. To confirm the diagnosis, well need to perform a thorough evaluation and interview to learn more about your medical history and lifestyle. Well also need to examine your foot and perform a physical therapy evaluation to assess your overall strength and coordination. Additionally, we may need to do an MRI of your arm to get a better look at the affected nerves. Depending on the severity of your symptoms, we may also apply a splint to immobilize the affected area or pursue other therapeutic procedures such as decompression of the peripheral nerve. 