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Croup

Signs & Symptoms

 Narrowing of the subglottic airway #Laryngotracheitis
Ref: Uptodate [ Clinical features, evaluation, and diagnosis]
Abrupt onset of symptoms
Ref: Epocrates [ https://online.epocrates.com/diseases/681/Croup]
Distinctive seal-like barky cough
Ref: Epocrates [ https://online.epocrates.com/diseases/681/Croup]
Worsening at the clinical course of viral laryngotracheitis #Bacterial_tracheitis
Note: In secondary infection
Ref: Uptodate [ Clinical features, evaluation, and diagnosis] Epocrates [ https://online.epocrates.com/diseases/681/Croup]

Physical Examination

 Poor response to treatment with nebulized epinephrine (negative symptom)
Ref: Epocrates [ https://online.epocrates.com/diseases/681/Croup]
Worsening at the clinical course of viral laryngotracheitis #Bacterial_tracheitis
Note: In secondary infection
Ref: Uptodate [ Clinical features, evaluation, and diagnosis] Epocrates [ https://online.epocrates.com/diseases/681/Croup]
Biphasic stridor at rest #Laryngotracheitis
Note: Sign of significant upper airway obstruction, due to Upper airway obstruction
Ref: Uptodate [ Clinical features, evaluation, and diagnosis]

Lab / Serology

Imagin Study

 Steeple sign in anteroposterior view
Note: Narrowed trachea, due to Narrowed trachea
Ref: Epocrates [ https://online.epocrates.com/diseases/681/Croup]

Complication

 Death #Laryngotracheitis
Ref: Uptodate [ Clinical features, evaluation, and diagnosis]

Risk Factors

 Male
Ref: Epocrates [ https://online.epocrates.com/diseases/681/Croup]

Cause

Other