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Living with Sterile multifocal osteomyelitis with periostitis and pustulosis

An inherited inflammation condition that begins in infancy with a pimple-like rash, bone pain, and swollen joints.

Understanding Sterile multifocal osteomyelitis with periostitis and pustulosis

Sterile multifocal osteomyelitis with periostitis and pustulosis is an inherited autoinflammatory disease that begins in infancy.

In autoinflammatory diseases, the immune system causes inflammation without an infection. People have body-wide inflammation, a rash with pimple-like bumps (pustules), and bone pain. Bone inflammation (osteitis) and swelling of the tissue covering the bone (periostitis) occur without infection. Signs may begin in the newborn or infant years.

Signs & symptoms

Symptoms vary from person to person. GARD lists these among the most common:

  • Skin rash with pimple-like bumps
  • Bone inflammation and pain
  • Swollen joints
  • Slow weight gain in infancy
  • Thin or weak bones
  • Delayed motor skills

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, allergy and immune system specialists, bone and joint specialists and genetic specialists.

  3. Consider genetic testing

    Changes in IL1RN are linked to this condition. Genetic testing and counseling can help confirm a diagnosis and explain what it means for your family.

  4. Connect with expert centers

    Immune Deficiency Foundation may keep lists of experts for this condition.

Care & treatment

Care team
autoimmune and inflammatory disease specialists (rheumatologists); Allergy and immune system specialists (allergists / immunologists); Bone and joint specialists (orthopedists or orthopedic surgeons); Genetic specialists (geneticists)
Expert care
Expert lists: Immune Deficiency Foundation
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 Immune Deficiency Foundation and other patient organizations
  • 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
How do we tell this inflammation apart from infection?
Which specialists should be on my child's team?
Would IL1RN gene testing help our family?

Quick facts

Symptoms usually startNewborn and as an Infant
InheritanceAutosomal Recessive
GenesIL1RN

Changes in the IL1RN gene cause this condition. It is autosomal recessive, meaning a child inherits a changed copy of the gene from each parent.

GeneticSkin

Also known as: autoinflammatory disease due to interleukin-1 receptor antagonist deficiency; chronic recurrent multifocal osteomyelitis 2, with periostitis and pustulosis; deficiency of the interleukin-1 receptor antagonist; dira; interleukin 1 receptor antagonist deficiency; interleukin-1 receptor antagonist deficiency

Patient organizations

Source: NIH GARD · Sterile multifocal osteomyelitis with periostitis and pustulosisGARD ID 10516 · GARD page updated September 2026 · Plain-language summary by Know Rare; editorial review pending. General information, not medical advice.

You are more than your diagnosis

Perspectives from people navigating life with Sterile multifocal osteomyelitis with periostitis and pustulosis.

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