mevalonic aciduria (Monarch Disease Ontology term MONDO_0012481) (MVA) is a rare, very severe form of mevalonate kinase deficiency (MKD) characterized by dysmorphic features, failure to thrive, psychomotor delay, ocular involvement, hypotonia, progressive ataxia, myopathy, and recurrent inflammatory episodes. Also known as: HIDS, MKD, MVA, complete mevalonate kinase deficiency, hyperimmunoglobulin D with periodic fever syndrome.