Sources & References

79 published sources for Schnitzler Syndrome, each with evidence grades and key findings.

79 total sourcesGrade A: 1Grade B: 27Grade C: 45Grade D: 6clinical (2)treatment (31)diagnostics (14)genetics (8)epidemiology (4)reviews (6)pathogenesis (3)pathophysiology (8)case reports (3)

clinical

2 sources

Grade CreviewUnverified

Acquired autoinflammatory disorders: a dermatologist's perspective.

Bishnoi A, Sharma A, Baskaran N, Mehta H, Chatterjee D, Vinay K · Clin Exp Dermatol · 2025

  • ●Comprehensive dermatology review of acquired autoinflammatory disorders including Schnitzler syndrome, AOSD, VEXAS, Kikuchi-Fujimoto disease, and HLH
  • ●Schnitzler syndrome presented as a paradigm of acquired autoinflammatory disease with multifactorial pathogenesis
  • ●Distinguishes autoinflammatory disorders from connective tissue diseases by negative ANA
  • ●Highlights expanding genetic spectrum of acquired autoinflammatory disorders since VEXAS description
  • ●Cutaneous manifestations are often the earliest diagnostic clue; detailed histopathologic classification provided
DetailsDOI ↗

treatment

31 sources

Grade Ccase reportn=1Unverified

Tinea labialis in a patient with Schnitzler syndrome on interleukin-1 receptor antagonist.

Mooney N, Grewal A, Pei S, Bogner P, Kuraitis D · JAAD Case Rep · 2025

  • ●First reported case of tinea labialis (oral dermatophyte infection) in a Schnitzler syndrome patient on anakinra
  • ●Highlights fungal infection as an infectious complication of IL-1 receptor antagonist therapy
  • ●Underscores importance of dermatologic monitoring during long-term anakinra treatment
  • ●From Roswell Park Comprehensive Cancer Center, Buffalo, NY
DetailsDOI ↗
Grade DletterUnverified

Letter to the editor - "Re: Tinea labialis in a patient with Schnitzler syndrome on interleukin-1 receptor antagonist".

Velusamy B, Pincelli T, Sokumbi O · JAAD Case Rep · 2025

  • ●Expert commentary from Mayo Clinic dermatologists on anakinra-associated fungal infection risk
  • ●Contextualises tinea labialis as rare but clinically important opportunistic infection during IL-1 blockade
  • ●Supports surveillance for dermatophyte infections in Schnitzler syndrome patients on IL-1 inhibitors
DetailsDOI ↗

diagnostics

14 sources

Grade DletterUnverified

Monoclonal gammopathies of cutaneous significance: A nomenclature and pathophysiology-based classification.

Mir TH, Patell R, Freed JA · J Am Acad Dermatol · 2026

  • ●Proposes nomenclature framework for monoclonal gammopathies of cutaneous significance (MGCS)
  • ●Classifies Schnitzler syndrome within pathophysiology-based MGCS taxonomy
  • ●Distinguishes Schnitzler syndrome from other MGCS including POEMS, TEMPI, and scleromyxedema
  • ●Supports standardised language to improve recognition and reporting of Schnitzler syndrome
DetailsDOI ↗
Grade Ccase reportn=1Unverified

Differential Diagnosis of Chronic Spontaneous Urticaria.

Gialama D, Bonnekoh H, Rothermel ND, Oldenburg R, Khan DA, Hoffman HM, Lang D, Kolkhir P · J Allergy Clin Immunol Pract · 2025

  • ●Identifies key red flags distinguishing Schnitzler syndrome from chronic spontaneous urticaria: wheals lasting >24 hours, post-inflammatory hyperpigmentation, arthralgia, fever, elevated CRP
  • ●Recommends serum immunofixation electrophoresis and genetic testing when red flags are present
  • ●Discusses autoinflammatory, autoimmune, and malignant causes of chronic recurrent wheals
  • ●From Charité Berlin group; highlights role of histology and laboratory work-up in differential diagnosis
  • ●Case-based approach to DDx including Schnitzler syndrome and urticarial vasculitis
DetailsDOI ↗
Grade CreviewUnverified

[What is an undifferentiated systemic autoinflammatory disease in adults? Current state of knowledge and practical approach].

Mertz P, Chauffier J, Delplanque M · Rev Med Interne · 2025

  • ●French-language review of undifferentiated systemic autoinflammatory diseases (SAIDs) in adults
  • ●Discusses innate immunity dysregulation and differential diagnosis including Schnitzler syndrome
  • ●Provides practical diagnostic approach to distinguishing undifferentiated SAID from defined entities
  • ●Relevant to Schnitzler syndrome evaluation in patients without classic gammopathy
DetailsDOI ↗

genetics

8 sources

epidemiology

4 sources

Grade Bcohort studyn=306Unverified

Systemic autoinflammatory disease diagnoses in a single year from a UK national referral centre.

Caterson HC, Papadopoulou C, Peet C, Lachmann HJ · Rheumatology (Oxford) · 2025

  • ●306 patients referred to UK national SAID centre in 2022; 121 (39.5%) received a SAID diagnosis
  • ●Median diagnostic delay for late-adult-onset SAIDs (including Schnitzler) was 6 years (IQR 2–8.5 years)
  • ●Late-adult-onset SAIDs median age at diagnosis 65 years (IQR 57.75–74.25); predominantly new diagnoses
  • ●Confirms significant underdiagnosis and delay for adult-onset autoinflammatory conditions
  • ●Genetic testing with 24-gene NGS panel supported diagnosis in 49% of SAID patients
DetailsDOI ↗

reviews

6 sources

pathogenesis

3 sources

Grade Csystematic reviewUnverified

Neutrophilic Urticarial Dermatosis: A Window into Systemic Inflammation and Autoimmune Disorders.

Cai X, Zheng Y, Yang C, Xu J, Fang H, Qiao J · Clin Rev Allergy Immunol · 2025

  • ●Comprehensive review of neutrophilic urticarial dermatosis (NUD) across five major conditions: Schnitzler syndrome, Still's disease, CAPS, SLE, and VEXAS syndrome
  • ●Proposes a diagnostic framework for NUD with skin biopsy as the central tool
  • ●Discusses neutrophilic epitheliotropism as a histological hallmark in Schnitzler syndrome
  • ●NUD may serve as an early cutaneous indicator of occult systemic autoinflammatory disease
  • ●Multidisciplinary assessment recommended for definitive diagnosis of underlying etiology
DetailsDOI ↗

pathophysiology

8 sources

case reports

3 sources