a rare neurological condition in which a person is unable to move or speak, but retains full awareness and mental alertness

a complex developmental disorder stigmatized by persistent challenges with social communication and interaction or repetitive patterns of thought and behavior

a not uncommon congenital defect in which a vertebra is malformed; unless several vertebrae are affected or there is myelomeningocele there are few symptoms; can be diagnosed by amniocentesis

a loss or deficiency of motor control with involuntary spasms caused by permanent brain damage present at birth

a central nervous system disorder that causes sudden, unprovoked, and recurrent seizures

meaningless repetition or echoing of vocalizations made by another person, as a result of mental disorder

a condition where an individual lacks the ability to visualize or mentally create images in their mind's eye

a specific neurobiological disorder marked by difficulty reading and spelling in individuals with otherwise unaffected intelligence

a disorder that affects the ability to comprehend or process information, particularly when not associated with physical disability

a condition in which someone is paralyzed from neck down

the condition of being incapable of clearly seeing objects that are near to one