Cause of epistaxis are all except-

Ans. is 'a' i.e., Allergic rhinitis Causes of epistaxiso Causes of epistaxis may be divided into : - i) Local (in nose and nasopharynx), ii) General, iii) Idiopathic.Common causes of epistaxisLocal causesSystemic causeso Trauma (nose-picking, fracture, nose plugs)o Hypertensiono Infection or inflammationo Arteriosclerosiso Surgery'o Drugs (NSAIDs, anticoagulants)o Septal deformity'o Bleeding dyscrasia (Hemophilia, Von Willebrand's disease)3 Foreign bodyo Toxic chemicalso Systemic toxicity (heavy metals)o Neoplasmo Alcohol & tobacco useo Granulomatous diseaseo Hereditary hemorrhagic telangiectasia (Osier-Weber-Rendu disease)