<unk>  is a rare genetic disorder characterized by microcephaly, stunted growth, and a receding chin. Symptoms vary among patients, but other characteristics include a soft, high-pitched voice, partial webbing of the fingers and toes, palate deformations, genital abnormalities, language difficulties, and an aversion to crowds. The pathogenesis of the disease is yet to be identified, and no medical tests can definitively diagnose the disease. The primary method of diagnosis is to identify facial phenotypes. Since it was first described in 1965 by English physician Victor<unk> , over 140 cases have been reported worldwide. Although the majority of cases have been reported from the United States, Germany, and Russia, the disorder appears to affect both genders and all ethnicities equally.
Dubowitz syndrome
Keppen–Lubinsky syndrome
XXYY syndrome
Foster Kennedy syndrome
Ring chromosome 20 syndrome
XYYYY syndrome
Goldberg–Shprintzen syndrome
XYYY syndrome