Which are the symptoms of Hyper-IgD Syndrome / Hyperimmunoglobulinemia D With Recurrent Fever (HIDS)?

Hyper-IgD Syndrome (HIDS), or Hyperimmunoglobulinemia D with recurrent fever, is a rare autoinflammatory condition characterized by recurrent, lifelong episodes of high fever typically lasting three to seven days. These episodes are frequently accompanied by systemic symptoms such as abdominal pain, skin rashes, joint inflammation, and painful cervical lymphadenopathy.

What are the primary symptoms of Hyper-IgD Syndrome?

The hallmark of Hyper-IgD Syndrome is the predictable recurrence of inflammatory flares triggered by vaccination, minor trauma, or stress. During a flare, patients experience a sudden onset of fever often exceeding 39°C (102.2°F). Clinical data indicates that the following symptoms are most frequently reported by those living with Hyper-IgD Syndrome:

• Recurrent fevers lasting 3 to 7 days.


• Abdominal distress, including nausea, vomiting, and diarrhea.


• Painful, swollen lymph nodes in the neck (cervical lymphadenopathy).


• Joint pain (arthralgia) or swelling (arthritis), most commonly in the knees and ankles.


• Skin manifestations, such as maculopapular rashes, urticaria, or nodules.

How does Hyper-IgD Syndrome affect daily quality of life?

For the six members of the Hyper-IgD Syndrome community on DiseaseMaps.org, the unpredictable nature of these flares is the most challenging aspect. Because symptoms can be debilitating, patients often face frequent school or work absences. Chronic fatigue and the physical toll of systemic inflammation can significantly impact long-term quality of life, though many individuals remain asymptomatic between flares.

When should patients with Hyper-IgD Syndrome seek immediate care?

While Hyper-IgD Syndrome is chronic, you should seek urgent medical evaluation if you experience signs of amyloidosis, a rare but serious complication where protein deposits damage organs, particularly the kidneys. Additionally, severe abdominal pain that mimics an acute surgical abdomen requires immediate professional assessment to rule out complications like bowel obstruction or peritonitis.

How do symptoms of Hyper-IgD Syndrome evolve?

In most patients, the frequency of Hyper-IgD Syndrome flares tends to decrease as they reach adulthood. While the severity of individual episodes remains variable, the systemic inflammation associated with Hyper-IgD Syndrome is managed through targeted therapies, such as IL-1 inhibitors, which have transformed the management of the disease for many patients.

Next steps

• Consult a rheumatologist or an immunologist familiar with autoinflammatory diseases.


• Keep a detailed "fever diary" to track the duration, triggers, and specific symptoms of each flare.


• Connect with the DiseaseMaps.org community to share experiences with others managing this condition.


• Discuss potential clinical trials or registry participation with your specialist.

Medical disclaimer: This content is for informational purposes only and does not constitute professional medical advice, diagnosis, or treatment.

References

• Orphanet: Hyper-IgD syndrome (ORPHA:408)


• NIH GARD: Hyperimmunoglobulinemia D with recurrent fever


• OMIM: Mevalonate Kinase Deficiency (MIM #260920)


• Autoinflammatory Alliance: HIDS/MKD Overview