Sacral Nerve Root Cysts
Saint Vitus Dance
Sandhoff Disease
Schilder's Disease
Schizencephaly
Seitelberger Disease
Seizure Disorder
Semantic Dementia
Septo-Optic Dysplasia
Severe Myoclonic Epilepsy of Infancy (SMEI)
Shaken Baby Syndrome
Shingles
Shy-Drager Syndrome
Sjögren's Syndrome
Sleep Apnea
Sleeping Sickness
Sotos Syndrome
Spasticity
Spina Bifida
Spinal Cord Infarction
Spinal Cord Injury
Spinal Cord Tumors
Spinal Muscular Atrophy
Spinocerebellar Atrophy
Spinocerebellar Degeneration
Steele-Richardson-Olszewski Syndrome
Stiff-Person Syndrome
Striatonigral Degeneration
Stroke
Sturge-Weber Syndrome
Subacute Sclerosing Panencephalitis
Subcortical Arteriosclerotic Encephalopathy
SUNCT Headache
Swallowing Disorders
Sydenham Chorea
Syncope
Syphilitic Spinal Sclerosis
Syringohydromyelia
Syringomyelia
Systemic Lupus Erythematosus