Viral croup 病毒性哮吼
2025/1/13
Viral croup, or laryngotracheobronchitis, is characterized by inspiratory stridor, barking cough, and hoarse voice caused by inflammation of the larynx and subglottic airways. The main causative agents are viruses, with parainfluenza virus accounting for about 75%. Rhinovirus, influenza, and adenovirus can also cause this disease. It is common in children under six years old, especially in children six months to 3 years old.