Major conditions include: Headache disorders such as migraine, cluster headache and tension headache Epilepsy and seizure disorders Neurodegenerative disorders, including Alzheimer's disease, Parkinson's disease, and Amylotrophic Lateral Sclerosis (ALS or Lou Gehrig's disease) Cerebrovascular disease, such as transient ischemic attack and stroke Sleep disorders Cerebral palsy Infections of the bra