see also:

• stridor
• noisy breathing
• lung crepitations
• stertor
• snoring
• obstructive sleep apnoea (OSA)
• Stridor vs Wheeze vs Stertor and snoring in children (pdf)

• noise during breathing can be of various types depending upon whether awake or asleep and on where the airway obstruction arises
• wheeze is primarily an expiratory musical sound coming from the lungs but may become biphasic and is usually caused by asthma, but also may occur in acute pulmonary oedema (APO) or inhaled foreign body which has made it into the thoracic cavity
• also called rales

• asthma
• bronchiolitis
• acute pulmonary oedema (APO)
• Inhaled foreign bodies
• tumour within a bronchus
• extrinsic pressure on a bronchus
  • tumour