<prompt> Causes of epistaxis are all exceptAllergic rhinitisForeign bodyTumourHypeension  <response>: Causes of epistaxis Trauma Infections Foreign bodies Neoplasms of nose and paranasal sinus Atmospheric changes Deted nasal septum Hypeension Pregnancy Leukemia Liver disease Kidney disease Idiopathic Ref: Dhingra 7e pg 197. 