Inflammation of the epiglottis.

Inflammation of the EPIGLOTTIS and supraglottic structures including the PHARYNX; UVULA; base of tongue; and aryepiglottic folds. It is usually caused by HAEMOPHILUS INFLUENZAE in children but often by different organisms in adults.

Inflammation of the LARYNGEAL MUCOSA, including the VOCAL CORDS. Laryngitis is characterized by irritation, edema, and reduced pliability of the mucosa leading to VOICE DISORDERS such as APHONIA and HOARSENESS.

A thin leaf-shaped cartilage that is covered with LARYNGEAL MUCOSA and situated posterior to the root of the tongue and HYOID BONE. During swallowing, the epiglottis folds back over the larynx inlet thus prevents foods from entering the airway.

Inflammation involving the GLOTTIS or VOCAL CORDS and the subglottic larynx. Croup is characterized by a barking cough, HOARSENESS, and persistent inspiratory STRIDOR (a high-pitched breathing sound). It occurs chiefly in infants and children.

Infections with bacteria of the genus HAEMOPHILUS.

Abnormal accumulation of fluid in tissues of any part of the LARYNX, commonly associated with laryngeal injuries and allergic reactions.

Examination, therapy or surgery of the interior of the larynx performed with a specially designed endoscope.

A species of HAEMOPHILUS found on the mucous membranes of humans and a variety of animals. The species is further divided into biotypes I through VIII.

A type of H. influenzae isolated most frequently from biotype I. Prior to vaccine availability, it was a leading cause of childhood meningitis.

The period of recovery following an illness.

Any hindrance to the passage of air into and out of the lungs.