UDP-galactose-4-epimerase deficiency
Uhl anomaly
Ulbright Hodes syndrome
Ulcerative colitis
Ulerythema ophryogenesis
Ulna and fibula absence with severe limb deficit
Ulna hypoplasia mental retardation
Ulna metaphyseal dysplasia syndrome
Ulnar hypoplasia lobster claw deformity of feet
Umbilical cord ulceration intestinal atresia
Uncombable hair syndrome
Uniparental disomy
Uniparental disomy of 11
Uniparental disomy of 13
Uniparental disomy of 14
Uniparental disomy of 2
Uniparental disomy of 6
Unna-Politzer nevus
Unna's seborrhoeic eczema
Upington disease
Upper limb defect eye and ear abnormalities
Upton Young syndrome
Urachal cancer
Urachal cyst
Uramoron syndrome
Urban Rogers Meyer syndrome
Urban Schosser Spohn syndrome
Urea cycle enzymopathies
Uremia
Urethral obstruction sequence
Uridine monophosphate synthetase deficiency
Urinary calculi
Urinary tract neoplasm
Urioste Martinez Frias syndrome
Urocanase deficiency
Urogenital adysplasia
Urophathy distal obstructive polydactyly
Urticaria
Urticaria Pigmentosa
Urticaria, Cholinergic
Urticaria, Cold
Urticaria, Papular
Urticaria, Physical
Urticaria-deafness-amyloidosis
Usher Syndrome
Usher syndrome, type 1C
Usher syndrome, type 1D
Usher syndrome, type 1E
Usher syndrome, type 2A
Usher syndrome, type 2B
Usher syndrome, type 2C
Usher syndrome, type 3
Usher syndrome, type IA
Usher syndrome, type IB
Uveal diseases
Uveitis
Uveitis, anterior
Uveitis, posterior