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Living with Deficiency of mevalonate kinase

A genetic condition with repeated episodes of fever that start in infancy.

Understanding Deficiency of mevalonate kinase

Deficiency of mevalonate kinase is a genetic condition marked by repeated episodes of fever that usually begin in infancy.

Each fever lasts about 3 to 6 days. In childhood, episodes can happen as often as 25 times a year and become less frequent with age. There are two types: a less severe type called hyperimmunoglobulinemia D syndrome (HIDS) and a more severe type called mevalonic aciduria (MVA).

Signs & symptoms

Symptoms vary by type. GARD says people with HIDS typically have these during fever episodes:

  • Recurrent fever
  • Swollen lymph nodes
  • Abdominal pain
  • Joint pain
  • Diarrhea
  • Skin rashes and headache

Not everyone has every symptom. GARD's list comes from the Human Phenotype Ontology.

Diagnosis

  1. Talk with your doctor

    Share the symptoms you've noticed, when they started and your family health history. Notes and photos can help.

  2. See a specialist

    Specialists who may be involved include autoimmune and inflammatory disease specialists, genetic specialists and skin, hair, and nail specialists.

  3. Ask which tests can help

    Your care team will decide which exams and tests can confirm the diagnosis.

Care & treatment

Care team
autoimmune and inflammatory disease specialists (rheumatologists); Genetic specialists (geneticists); Skin, hair, and nail specialists (dermatologists)
Expert care
Ask about multidisciplinary care centers for rare conditions
Treatment
GARD doesn't list specific treatments for this condition. Your care team will tailor care to your symptoms.
Research
Clinical trials and observational studies may be options. See the research section below.

General information, not medical advice. Your care team makes the decisions.

Everyday life

Living with a rare condition is easier with support.

  • Connect with Children's Skin Disease Foundation
  • Keep notes on symptoms, changes and questions for appointments
  • Ask about patient registries that help research
  • Look into financial aid and travel resources for care visits
Bring these questions to your next doctor visit
Which type, HIDS or MVA, do I or my child have?
Can genetic testing confirm the diagnosis?
What should we do during a fever episode?

Quick facts

Symptoms usually startInfant

GARD says changes in genes cause this condition. It does not list a specific gene or inheritance pattern.

GeneticSkinInherited Metabolic

Also known as: mevalonate kinase deficiency; mkd

Patient organizations

Broader rare-disease groups

Source: NIH GARD · Deficiency of mevalonate kinaseGARD ID 21315 · GARD page updated September 2026 · Plain-language summary by Know Rare; editorial review pending. General information, not medical advice.

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