Nosebleeds in the elderly may be caused by physiological factors such as environmental dryness and nose picking, or they may be caused by high blood pressure, deviated nasal septum and other diseases. 1. Adverse stimuli: Nosebleeds can occur when the living environment is dry or when there are bad habits such as nose picking. 2. Hypertension: the cause of the disease is still unclear, and is mostly considered to be related to high sodium and low potassium diet, poor lifestyle, insufficient physical activity, excessive alcohol consumption and other factors. Elderly people who are constipated, exert themselves too much and are emotionally agitated may suffer rupture of nasal blood vessels, which may lead to nosebleed. 3. Deviated nasal septum: usually due to trauma, dysplasia, occupational lesions, heredity and other conditions. Patients often have nasal congestion, headache, nosebleed and other symptoms, the elderly mucous membrane is dry, secretion is reduced, which can be manifested as the elderly nosebleed. It is recommended that when the elderly have nosebleeds, they should consult a doctor for a clear diagnosis and standardized treatment.