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Cryopyrin-associated periodic syndrome (CAPS) is a group of rare, heterogeneous autoinflammatory disease characterized by interleukin 1β-mediated systemic inflammation and clinical symptoms involving skin, joints, central nervous system, and eyes.

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CAPS includes three diseases that were previously thought to be different syndromes:

  1. Muckle Wells syndrome (MWS)
  2. familial cold urticaria (FCU)
  3. chronic infantile neurological cutaneous and articular syndrome (CINCA) (also known in USA as neonatal onset multisystem inflammatory disease, NOMID)

These three diseases are part of a single spectrum.

Cryopyrin-Associated Periodic Syndromes Causes

CAPS is caused by a gene mutation that results in a defect in a protein called cryopyrin, which plays an important role in controlling inflammation. CAPS is an autosomal dominant disease, meaning only one copy of the gene from one parent is needed to cause the disease.

Cryopyrin-Associated Periodic Syndromes Symptoms

The symptoms and severity vary by specific disease. NOMID, or neonatal onset multisystem inflammatory disease – the most severe of the CAPS – causes fever with inflammation in multiple organs. Early symptoms of NOMID may include a hive-like rash that does not itch; inflammation of the membrane surrounding the brain, which causes headache, blindness or hearing loss; bulging appearance to the eyes; and episodes of vomiting. After age 1, half of children with NOMID develop joint pain and swelling.

Muckle-Wells syndrome is characterized by symptoms that come and go, including skin rash, red eyes, joint pain and severe headaches with vomiting. Episodes last between one and three days. Hearing loss, which may be complete, often occurs by the teenage years.

In people with familial cold autoinflammatory syndrome, exposure to cold and possibility other environmental triggers causes a hive-like rash. Other symptoms include fever, chills, nausea, extreme thirst, headache and joint pain.

Cryopyrin-Associated Periodic Syndromes Diagnosis

Doctors who suspect a diagnosis of CAPS based on a physical examination may use one or more of several tests to confirm the diagnosis. These include genetic tests, skin biopsy of the rash, eye exam, hearing tests, tests on joint fluid obtained from a puncture in the lower spine and magnetic resonance images of the brain and inner ears.

Cryopyrin-Associated Periodic Syndromes Treatment

Research in recent years shows that biologic agents that target interleukin-1 are effective for treating CAPS.

Other treatments include physical therapy, splints to treat joint deformities, and nonsteroidal anti-inflammatory drugs, corticosteroids or methotrexate to reduce symptoms. Less commonly, surgery is needed to correct joint deformities.

Cryopyrin-Associated Periodic Syndromes Self Care

Until an effective treatment for cold autoinflammatory disease is discovered, people with the syndrome may benefit from moving to a place with mild weather. Emotional support is important for anyone living with or caring for child with CAPS.

Discuss, discover, solve and share real live cases with top healthcare experts.

 

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