What does an abnormal Babinski response indicate?

An abnormal Babinski response is characterized by upgoing toes when the lateral aspect of the sole of the foot is stroked. In adults and older children, a normal response would be a downward flexion of the toes. The presence of upgoing toes indicates dysfunction in the corticospinal tract, which is generally associated with neurological impairment.

This response is significant in assessing the integrity of the nervous system, particularly in relation to the brain and spinal cord. An abnormal response can help clinicians identify neurological conditions that may need further evaluation or intervention.