Abnormal development of the part of the brain called the diencephalon which in turn affects the pituitary gland.
The main manifestations are impaired sexual development, obesity and periodic psychotic episodes.
Grahmann's syndrome
Wildervanck syndrome
Wolman disease
Hanhart syndrome
Zimmerman-Laband syndrome
Gitelman syndrome
Werdnig-Hoffman disease
Klinefelter's syndrome