<unk>  is a congenital (present from birth) disease that involves obesity, decreased muscle tone, decreased mental capacity, and sex glands that produce little or no hormones.
Prader-Willi syndrome
Bardet-Biedl syndrome
Beckwith-Wiedemann syndrome
Laron syndrome
Klippel-Trenaunay-Weber syndrome
Smith-Magenis syndrome
Joubert syndrome
13q deletion syndrome