Dry syndrome may cause pulmonary hypertension. Dry syndrome is a chronic autoimmune disease, the main symptoms of mouth, eye dryness, etc., but can also cause other systemic symptoms, when the respiratory system is involved, it can lead to pulmonary arterial hypertension, some patients in the early stage of interstitial pulmonary fibrosis, bronchopneumonia, etc., and the final stage of the development of pulmonary arterial hypertension. In patients with pulmonary hypertension caused by dry syndrome, mild cases may manifest as chest tightness and shortness of breath after activities, while severe cases may manifest as dyspnea, chest pain and other symptoms. When patients with dry syndrome have the above symptoms, it is recommended to go to the hospital in time for further examination and treatment under the guidance of professional doctors.