Anencephaly facts Anencephaly is an example of a neural tube defect, a condition that results from an error in the first weeks of embryonic development. In anencephaly, the bones of the skull and brain do not develop prope...

Adie Syndrome is a rare neurological disorder affecting the pupil of the eye. In most patients the pupil is dilated (larger than normal) and slow to react to light on nearby objects. In some patients, however, the pupil may be constricted (smaller...

Adie Syndrome is a rare neurological disorder affecting the pupil of the eye. In most patients the pupil is dilated (larger than normal) and slow to react to light on nearby objects. In some patients, however, the pupil may be constricted (smaller...