Dyspnea is a medical term that refers to the sensation of shortness of breath or difficulty breathing. It can occur during physical activity or at rest and may be caused by various conditions, including asthma, chronic obstructive pulmonary disease (COPD), or heart failure. People experiencing dyspnea may feel a tightness in their chest or a sense of suffocation. The severity of dyspnea can vary from mild to severe and may be temporary or chronic. It is important for individuals experiencing persistent dyspnea to seek medical evaluation, as it can indicate underlying health issues that require treatment. Proper management can improve quality of life and overall health.