Features of Chronic mountain sickness are all except

Chronic mountain sickness: - - Occasionally, a person who remains at high altitude for too long experience chronic mountain sickness, in which the following effect occur- The red blood cell mass & hematocrit become exceptionally high due to chronic hypoxia (| in erythropoietin). The pulmonary aerial pressure become elevated due to | blood viscosity. The right side of hea become greatly enlarged as a result of pulmonary hypeension. The peripheral aerial pressure fall. Congestive hea failure ensues. Death often follow unless the person is moved to lower altitude.