Description.

Deficit

A lack or deficiency of an essential quality or element; for example, a neurologic deficit is a defect in the structure or function of the brain.

Deja vu

Feeling as if one has lived through or experienced this moment before; may occur in people without any medical problems or immediately before a seizure (i.e., as a simple partial seizure).

Development

The process of physical growth and the attainment of intelligence and problem-solving ability that begins in infancy; any interruption of this process by a disease or disorder is called developmental delay.

Diabetes Insipidous

A condition with either relative or absolute lack of anti-diuretic hormone (ADH) leading to inability to concentrate the urine and subsequent polyuria/polydypsia and potentially fluid and electrolyte imbalance. This can be seen in a variety of conditions but most commonly in patients post neurosurgery or with cerebral malformations.

Electroencepahalogram (EEG)

EEG is a test that detects electrical activity in the brain using small, metal discs (electrodes) attached to the scalp.  The brain is constantly sending electrical signals even while sleeping.  Because the HH is deep within the brain, far away from the scalp EEG electrodes, the EEG may not detect any abnormal activity during a…