Which condition involves difficulty breathing?

Dyspnea is characterized by difficulty in breathing or a feeling of shortness of breath. It can be caused by various conditions affecting the respiratory system, such as asthma, pneumonia, or heart failure. When a patient reports dyspnea, it is essential to assess the underlying cause to provide appropriate care and management.

In contrast, embolism refers to a blockage in a blood vessel, which can lead to breathing difficulties if it affects the pulmonary arteries, but it does not specifically define the symptom of breathing difficulty itself. Edentulous describes a condition where a person is missing teeth, which is unrelated to respiratory function. Dysuria refers to painful urination, which is a urological issue and not associated with breathing or respiratory conditions. Hence, dyspnea is the term specifically denoting difficulty in breathing, making it the most suitable choice for this question.