What is unexplained breathlessness?

Everyone feels out of breath at some time. You may become out of breath after heavy physical activity or extreme effort such as walking briskly uphill or cycling fast. This is the sort of breathlessness you might expect and can control. Breathlessness may also be referred to as dyspnoea by health care professionals.

Acute, or short-term, breathlessness can come on suddenly. It usually requires immediate testing or treatment. There are many underlying problems connected to lack of breathing, but not all of them are due to lung problems.

Diagnosis and treatment for unexplained breathlessness

Our specialist team provide a comprehensive, one-stop assessment to find out the cause of your breathlessness.

The multi-disciplinary team’s experience combined with advanced diagnostic tests for lung conditions, ensures we can investigate the cause of your problems and apply a specialised approach to help improve and treat your symptoms.


Our consultants who specialise in the field of unexplained breathlessness include:

Royal Brompton Hospital


Dr James Hull

Consultant respiratory physician

Clincial lead for unexplained breathlessness service



Dr Felix Chua

Consultant in respiratory medicine




Professor Robert Wilson

Consultant physician in respiratory medicine





Harefield Hospital


Dr Jaymin Morjaria

Consultant in respiratory medicine