Pulmonary arterial hypertension associated with schistosomiasis (PAHS) is a form of pulmonary arterial hypertension (see this term) characterized by an elevated pulmonary arterial resistance leading to right heart failure, observed as a complication of a chronic schistosomiasis (see this term). The disease is EFO_0009198 (Pulmonary arterial hypertension associated with schistosomiasis). Also known as: PAH associated with schistosomiasis, schistosomiasis-associated PAH.