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The term dyspnoea refers to sudden and severe shortness of breath, or difficulty in breathing. It is one of the most common reasons for visits to the accident and emergency department of the hospital.
Breathlessness may be normal after exercise or exertion. However, this usually resolves on rest and is not severe.
Breathlessness that comes on suddenly and unexpectedly may be a warning sign of an underlying medical condition. The problem may lie in the heart or in the lungs.
There are other problems that may also cause severe dyspnoea including panic attacks, anxiety, obesity etc.
Some of the definitions of dyspnoea include:-