<unk>  (Latin for "creaking or grating noise") is a high-pitched extra-thoracic breath sound resulting from turbulent air flow in the larynx or lower in the bronchial tree. It is different from a stertor which is a noise originating in the pharynx.<unk>  is a physical sign which is caused by a narrowed or obstructed airway. It can be inspiratory, expiratory or biphasic, although it is usually heard during inspiration. Inspiratory<unk>  often occurs in children with croup. It may be indicative of serious airway obstruction from severe conditions such as epiglottitis, a foreign body lodged in the airway, or a laryngeal tumor.<unk>  should always command attention to establish its cause. Visualization of the airway by medical experts equipped to control the airway may be needed.
Stridor
Abasia
Growing Pains
Anismus
Nasal voice
Phossy jaw
Chattering teeth
Palatal myoclonus