Monarch Disease Ontology term MONDO_0010200 (Wilson disease) is a very rare inherited multisystemic disease presenting non-specific neurological, hepatic, psychiatric or osseo-muscular manifestations due to excessive copper deposition in the body. Also known as: Westphal pseudosclerosis, Westphal-Strumpell syndrome, Wilson's disease, cerebral pseudosclerosis, hepatolenticular degeneration.