Causes of epistaxis are all except
Allergic rhinitis
Foreign body
Tumour
Hypeension
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.
Nose and paranasal sinuses