Hereditary cerebral hemorrhage with amyloidosis, Icelandic type (Orphanet_100008, an Orphanet rare-disease nomenclature term) can be described as follows. Hereditary cerebral hemorrhage with amyloidosis (HCHWA), Icelandic type is a form of HCHWA (see this term) characterized by an age of onset of 20-30 years, systemic amyloidosis and recurrent lobar intracerebral hemorrhages. Also known as: HCHWA, Icelandic type, Hereditary cystatin C amyloid angiopathy.