[…] type 1 Congenital dyserythropoietic anemia type 2 Congenital dyserythropoietic anemia type 3 Congenital ectodermal dysplasia with hearing loss Congenital erythropoietic porphyria Congenital extrahepatic portosystemic shunt Congenital femoral deficiency [rarediseases.info.nih.gov]

[…] and cerebral arteriovenous anomaly Lymphedema, microcephaly and chorioretinopathy syndrome Lymphedema-distichiasis syndrome Lynch syndrome - Not a rare disease Lysinuric protein intolerance Mac Dermot Winter syndrome Macrocephaly, benign familial Macrocephaly-short [rarediseases.info.nih.gov]

[…] deficiency Congenital amegakaryocytic thrombocytopenia Congenital analbuminemia Congenital anosmia Congenital bilateral absence of the vas deferens Congenital bile acid synthesis defect, type 1 Congenital bile acid synthesis defect, type 2 Congenital central hypoventilation [rarediseases.info.nih.gov]

lentis Bloom syndrome Blount disease Blue cone monochromatism Blue diaper syndrome Blue rubber bleb nevus syndrome BOD syndrome Bohring-Opitz syndrome Bone dysplasia Azouz type Bone dysplasia lethal Holmgren type Book syndrome Boomerang dysplasia BOR-Duane [rarediseases.info.nih.gov]

[…] epilepsy oligophrenia syndrome of Moynahan Alopecia intellectual disability syndrome 2 Alopecia totalis Alopecia universalis Alopecia universalis onychodystrophy vitiligo Alopecia, epilepsy, pyorrhea, mental subnormality Alopecia-contractures-dwarfism-intellectual [rarediseases.info.nih.gov]