general/symptoms-and-signs-respiratory-system
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Postinfectious cough
Cough after a viral respiratory tract infection
Airway obstruction
Blockage in the respiratory system
Hiccup
Involuntary contraction of the diaphragm
Hypoxic ventilatory response
Biological reaction to increased altitude
Squawk (sound)
Wheezing sound
Stridor
High-pitched breathing sound due to obstruction of the larynx
Sputum
Mucus that is coughed up from the lower airways
Rhinorrhea
Filling of the nasal cavity with fluid mucus
Crackles
Respiratory sounds associated with abnormal lung conditions
Hypocapnia
State of reduced carbon dioxide in the blood
Wheeze
Coarse whistling sound from breathing