Which of the following symptoms might suggest a nerve injury in the lower back area?

Paresthesia is a significant symptom that can indicate a nerve injury in the lower back area. It refers to abnormal sensations in the skin such as tingling, numbness, or a "pins and needles" feeling. These sensations occur when a nerve is compressed, damaged, or irritated, leading to disturbances in normal sensory pathways. In cases of lower back nerve injury, such as those resulting from herniated discs or spinal stenosis, individuals often report paresthesia in areas that are innervated by the affected nerve.

In contrast, symptoms like swelling, stiffness, and cramping are more commonly associated with structural or muscular issues rather than direct nerve injury. Swelling is typically related to inflammation, stiffness can arise from muscular tightness or joint issues, and cramping often indicates muscle fatigue or overexertion. Hence, paresthesia stands out as a key indicator of potential nerve involvement in lower back conditions.