---
title: "Could breathlessness be related to the heart?"
description: "Learn how breathlessness may be assessed, which details are clinically useful and why symptoms need to be considered alongside your wider medical history."
url: "https://www.drmartins.org/blog/breathlessness-and-the-heart/"
author: "Dr Joao Martins"
medical_reviewer: "Dr Joao Martins"
review_status: "approved"
topic_cluster: "symptoms"
date_published: "2026-08-24"
date_modified: "2026-09-01"
---

# Could breathlessness be related to the heart?

Breathlessness can have several explanations. Its timing, triggers and associated symptoms help guide a careful assessment.

## There is more than one possible cause

Breathlessness may be related to the heart, lungs, fitness, anaemia, anxiety or other factors. A clinical assessment considers the symptom alongside your history rather than assuming a single explanation.

## Questions a cardiologist may ask

It is useful to know whether breathlessness occurs during exercise, at rest or when lying down; whether it developed suddenly or gradually; and whether there is chest discomfort, swelling, palpitations or fainting.

## Deciding whether tests are needed

The next step depends on the individual. Examination and basic observations may be followed by tests such as an ECG or echocardiogram when clinically appropriate.

## Sources

- [Shortness of breath](https://www.nhs.uk/conditions/shortness-of-breath/) — NHS

---

General information only. It does not replace individual medical advice, diagnosis or emergency care. In an emergency call 999.