- breast angiomatosis [DOID:1637]
A breast disease that is characterized by diffuse vascularity surrounding ducts and lobules without invasion, large irregular vascular spaces and flat epithelium without atypia.
- brachyolmia [DOID:0050690]
An osteochondrodysplasia characterized by generalized platyspondyly without significant long bone abnormalities and short stature.
- episodic ataxia [DOID:963]
A hereditary ataxia characterized by sporadic bouts of ataxia with or without continuous muscle movement.