Schnitzler Syndrome
How to pronounce it: Schnitzler - shh-nitz-ler
AiArthritis defines Schnitzler Syndrome as:
Schnitzler syndrome is a rare autoinflammatory disease. People with this condition usually have non-itchy hives (urticaria) and abnormal levels of certain proteins in their blood, especially a protein called monoclonal IgM gammopathy.
Symptoms & Characteristics
Common in All AiArthritis Diseases
Flares: Periods of worsening symptoms are called flares. A flare can last for hours, days, weeks, or months.
Physical Activity: Condition improves with activity and exercise and worsens with rest.
Comorbidities: When inflammation is left uncontrolled due to lack of proper treatment, comorbidities can develop. 70% of patients with chronic, lifelong disease will develop comorbidities, including dual or triple diagnoses.
Family History:
Autoimmune diseases often run in families, indicating a potential genetic predisposition where that gene can cause disease. Autoinflammatory diseases can occur multiple times in a family, but is based off of genetic mutation. It is not a gene that causes the disease— but a mutation on the gene that can cause the disease which can then be passed on to the next generation.
"Auto" Symptoms
Fatiga: Fatiga o agotamiento severo que puede no aliviarse con cafeína o estimulantes y que puede presentarse incluso después de un largo período de descanso.
Disfunción cognitiva: Niebla mental o periodos de tiempo en los que el pensamiento se nubla y resulta difícil concentrarse.
Síntomas similares a los de la gripe: Sin tener gripe: náuseas, debilidad muscular y malestar general.
Fiebre: Por lo general, el grado es bajo en las enfermedades autoinmunes (con excepción de la artritis idiopática juvenil) y el grado es más alto en las autoinflamatorias (el porcentaje varía mucho según la enfermedad).
Referencia: Estudio sobre los primeros síntomas de la artritis inducida por adyuvante, AiArthritis, 2019.
Inflammatory Arthritis Symptoms
Stiffness: Severe stiffness in one or more joints, especially in the morning or after sitting for long periods of time.
Joint Pain: Episodes of joint pain that may last for hours, days, or even weeks, that can appear and disappear suddenly. Often described as “jumping pain” into different locations.
Typically the joint pain will coincide with one or more “Auto” symptoms and start and stop suddenly - for no apparent reason (which is called a "flare"). Some people will experience all of the above symptoms, others only a few.
If you have any of the arthritis features, and at least one of the “Auto” features, please consult your physician about a referral to a specialist.
Symptoms Often Associated with Schnitzler Syndrome
- Chronic non-pruritic urticaria: non-itchy hives
- Organomegaly: increased size of several organs
- Bone pain
- Enlarged lymph nodes
There’s no single test that can confirm a Schnitzler syndrome diagnosis, so rheumatologists rely on a combination of physical exams, blood tests, imaging, and family history of autoimmune or autoinflammatory disease. Due to its nonspecific symptoms, Schnitzler Syndrome is often misdiagnosed as other conditions like chronic urticaria or autoimmune diseases.
To diagnose Schnitzler syndrome, patients must meet both of the major criteria from the Strasbourg Diagnostic Criteria:
- Recurrent urticarial (hive-like) rash
- Monoclonal IgM gammopathy (abnormal protein in the blood)
Additionally, they must have at least two of the following minor criteria:
- Recurrent fever
- Objective signs of abnormal bone remodeling
- Elevated CRP levels or leukocytosis (high white blood cell count)
- Neutrophilic infiltrate on skin biopsy
- Joint pain and inflammation
- Enlarged lymph nodes
- Enlarged organs (e.g., spleen or liver)
- Elevated red blood cell count or sedimentation rate (ESR)
Alternatively, a diagnosis can also be made if someone has monoclonal IgM gammopathy and three of the minor criteria.
While there are no specific ACR or EULAR guidelines for Schnitzler syndrome, these organizations emphasize the importance of systematic evaluation and differentiating between similar autoinflammatory disorders, ensuring accurate diagnosis and proper management.
Para un diagnóstico más preciso, pueden realizarse pruebas adicionales como biopsias de piel, punciones lumbares y exámenes de audición u ojos, especialmente cuando hay síntomas neurológicos o sensoriales. Las pruebas genéticas suelen ser cruciales para diagnosticar el síndrome CAPS, ya que permiten identificar mutaciones en el gen NLRP3, comúnmente asociado a esta afección.
While there are no specific ACR or EULAR guidelines for CAPS, both organizations emphasize the importance of genetic testing and comprehensive clinical evaluation to differentiate CAPS from other autoinflammatory syndromes, ensuring an accurate diagnosis and proper treatment approach.
The introduction of IL-1 receptor antagonists, such as anakinra, has revolutionized the treatment of Schnitzler Syndrome. Anakinra provides rapid relief from symptoms, often within hours of administration, and helps control systemic inflammation. However, continuous treatment is required, as symptoms typically recur upon discontinuation.
Other treatment options include:
- Corticosteroids: May provide temporary relief but are less effective long-term.
- Immunosuppressive Drugs: Often used in cases with severe systemic involvement.
- Supportive Care: Management of complications like anemia or organ dysfunction.
.
- Envía TU consejo
¡Necesitamos TU consejo! Rellena este formulario para ofrecer consejos a quienes padecen tu misma enfermedad.
- Schnitzler syndrome was first described by Dr. Liliane Schnitzler in 1972, who noted a combination of chronic urticaria (hives) and monoclonal gammopathy in patients. The condition is named after her, and it remains a rare autoinflammatory disorder that affects both the skin and immune system.
- There are only about 300 or so known cases of Schnitzler in the world.
- Most of the reported cases of Schnitzler syndrome have been from Europe, particularly France, but cases from Australia, Japan and the United States have been reported too.
- World Autoimmune and Autoinflammatory Arthritis Day - May 20th
- Rare Disease Day - February 29th (28th)
- Autoimmune Awareness Month - March
- Rheumatic Disease Awareness Month - September
- Pain Awareness Month - September
- Chronic Disease Awareness Day - July 10th
- Invisible Disabilities Week - 3rd full week of October
Otros recursos sobre el síndrome de Schnitzler
Con el fin de garantizar que esta página tenga la información más precisa y actualizada, esta página es... Actualmente a la espera de una evaluación médica. Parte de la información está sujeta a cambios.
Última actualización de la página: 31/10/2024