The main symptom of dyspnea is shortness of breath or labored breathing.
It's normal to have trouble breathing deeply for a few minutes after intense physical activity or exertion. In mild cases, you might feel like you're not getting enough air into your lungs. In severe cases, you might feel as though you're suffocating, what many people describe as “air hunger.”. Breathing problems can also coincide with chest pain.
If you experience shortness of breath when you're resting or during unexpected situations, you may have a serious medical condition. Chronic dyspnea can lead to:
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Difficulty breathing without any explanation
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Trouble taking deep breaths after low-exertion activities
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Feeling out of breath sooner than you used to after physical activity