Peripheral nerve injury refers to damage to the nerves outside of the brain and spinal cord, which can result from trauma, compression, or disease. Depending on the severity and location of the injury, symptoms may include pain, weakness, numbness, and loss of motor function in the affected area. Treatment options may vary depending on the extent of the damage, and can include physical therapy, medication, surgery, or other interventions to help restore nerve function. Researchers in this area focus on understanding the mechanisms of nerve injury and regeneration, developing new treatment approaches, and improving outcomes for individuals with peripheral nerve injuries.