The causes of nosebleeds in the elderly are related to nasal factors such as nasal inflammation, deviated nasal septum, nasal tumors, etc., as well as high blood pressure and cardiovascular diseases. 1. Nasal causes: surgery or trauma may cause nasal bleeding due to damage to the nasal septum, sinuses and nasal cavity; violent coughing, nose picking, sneezing, etc. may also cause bleeding; non-specific inflammation of the nasal cavity and sinuses may lead to nosebleed due to mucosal lesions; deviated nasal septum may lead to ulceration of the mucosa, dryness, etc. may be symptoms of nosebleed; nasal tumors may also destroy blood vessels and cause bleeding. 2. Systemic factors: hypertension and other causes of arterial pressure rise or fluctuation, will trigger nosebleeds; cardiovascular disease taking anticoagulant drugs, vascular sclerosis may lead to changes in vascular fragility, and even affect the coagulation, but also prone to nosebleeds. There are many reasons for nosebleeds in the elderly, you need to go to the hospital to find out the situation, early detection and early treatment. Do not use drugs indiscriminately.