Final answer:
NIHSS is a tool used to assess neurological deficits in stroke patients and track their progress during rehabilitation.
Step-by-step explanation:
NIHSS stands for National Institutes of Health Stroke Scale. It is a common tool used by healthcare professionals to assess neurological deficits in patients who have suffered a stroke. The NIHSS evaluates various aspects of neurological function, including motor strength, speech, language, and sensory perception. It is used to measure the severity of a stroke and to track a patient's progress during rehabilitation.