This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: ENT
Laryngitis sicca is associated with ? 
Select and explain. 
A. Rhinosporidium, B. M. leprae, C. Klebsiella azaenae, D. Klebsiella rhinoscleromatosis
C: Klebsiella azaenae
Answer: C: Klebsiella azaenae 
Explanation: Ans. is 'c' i.e., Klebsiella azaenae Laryngitis sicca (Atrophic laryngitis or laryngitis atrophica) It is a rare entity characterized by atrophic changes in the respiratory mucosa with loss of the mucus - producing glands. It is usually associated with atrophic rhinitis and pharyngitis caused by klebsiella ozaenae. The most common sites involved in larynx are the false cords (vestibular folds), the posterior region and the subglottic region. More common in women. Clinical features Irritable cough and hoarseness Excessive crusts formation which are sometimes bloodstained (hemorrhagic) with foul odour. Crusts are the most impoant diagnostic feature. Treatment Elimination of causative factors and humidification. Laryngeal sprays with glucose in glycerine or oil of pine helps in crust removal. Expectorants containing ammonium chloride or iodides also help to loosen the crust. Microlaryngoscopic removal of crust in laryngitis sicca is the new modality of treatment.