Neurology expert witnesses practice in a variety of fields, including medical malpractice, traumatic brain injury, stroke, epilepsy, and neurodegenerative disease litigation. Some of the most common specialties include vascular neurology, neurocritical care, movement disorders, epilepsy, and neuromuscular medicine. They can opine on the effects of brain and spinal cord injuries, seizures, hypoxia, toxic exposure, and delayed diagnosis on cognition, function, and prognosis.