NCIt related terms : Hyperimmunoglobulin D with Periodic Fever Syndrome; HIDS; MKD;
NCIt definition : A very rare autosomal recessive disorder of cholesterol biosynthesis. It is caused
by a deficiency of the enzyme mevalonate kinase, resulting in the accumulation of
mevalonic acid in the urine. Signs and symptoms include psychomotor retardation, ataxia,
recurrent fevers, skin rash, hepatosplenomegaly, and lymphadenopathy.;
Alternative definition : NICHD: An autoinflammatory disease caused by mutations in the mevalonate kinase (MVK)
gene leading to partial deficiency. It is characterized by attacks of inflammation
with fever, rash, lymphadenopathy, splenomegaly and serositis along with increased
acute phase reactants. Some patients exhibit elevations in immunoglobulin D (hyperimmunoglobulin
D). This disease is distinct from mevalonic aciduria caused by complete deficiency
of MVK.;