Peripheral nerve injuries occur when nerves outside the brain and spinal cord are damaged. These injuries can result from trauma, compression, or diseases, leading to symptoms like pain, weakness, or numbness in the affected area. Common causes include accidents, repetitive motions, or conditions like diabetes. Diagnosis typically involves a physical examination and tests such as electromyography (EMG) or nerve conduction studies. Treatment options may include physical therapy, medications, or, in severe cases, surgery to repair the damaged nerve. Early intervention is crucial for improving recovery outcomes and restoring function.