Nerve injury occurs when a nerve is damaged, which can disrupt the communication between the brain and the body. This can result from various causes, including trauma, compression, or diseases like diabetes. Symptoms may include pain, numbness, tingling, or weakness in the affected area. Treatment for nerve injury often involves physical therapy, medications, or surgery, depending on the severity. Early diagnosis and intervention are crucial for recovery. In some cases, nerves can regenerate over time, but complete recovery may not always be possible, highlighting the importance of proper care and management.