Hereditary cerebral hemorrhage with amyloidosis, Dutch type (Orphanet_100006) (HCHWA-D) is a form of HCHWA (see this term), a group of familial central nervous system disorders, characterized by severe cerebral amyloid angiopathy (CAA), hemorrhagic and non-hemorrhagic strokes and dementia. Also known as: HCHWA, Dutch type, HCHWA-D.