Chronic pulmonary thromboembolism (CPTE) is a condition in which persistent blood clots obstruct the blood vessels in the lungs. This obstruction increases pressure in the lungs and puts additional strain on the right side of the heart. Common symptoms include shortness of breath, fatigue, chest discomfort, and leg swelling. Treatment options may include blood-thinning medications (anticoagulants) or procedures to remove or open the blocked vessels, such as pulmonary thromboendarterectomy (PTE) or balloon pulmonary angioplasty (BPA).

A persistent morning cough lasting for several years may indicate an underlying chronic respiratory condition such as asthma or chronic obstructive pulmonary disease (COPD). Other possible causes include prolonged exposure to environmental irritants such as dust or smoke. It is advisable to consult a pulmonologist for a comprehensive evaluation to identify the underlying cause and initiate appropriate treatment.