Adults with nosebleeds in the right nose, the common clinical causes are dry nasal mucosa, nasal septum deviation to the right, nasal capillary hemangioma, and so on. 1. Nasal mucous membrane dryness: this condition is mostly seen in the fall and winter seasons, the air humidity is low, part of the population if the nasal mucous membrane capillary wall is thin, the nasal mucous membrane is easy to be dry in the process of respiration, which makes the submucosal capillaries rupture and bleed. 2. Nasal septum deviation to the right: this disease is related to the uneven development of the bones that make up the nasal septum and the formation of different tension curves, resulting in abnormal connections, and the mucous membrane of the nasal septum of the people suffering from this disease is easy to be hit by the impact of the airflow when breathing, resulting in the mucous membrane of the nasal septum to appear localized vesiculitis, which is also prone to lead to the rupture of blood vessels under the nasal mucous membrane and hemorrhage. 3. Nasal capillary hemangioma: this disease is related to chronic inflammation, trauma, endocrine dysfunction and other factors, it will continue to invade the surrounding normal tissues and blood vessels, mostly occurring in the front of the nasal septum, the front of the inferior turbinate, the external nasal skin, etc., often for the polyp-like with a tip, the surface is smooth or the formation of ulcers, easy to bleed. Nosebleed, it is recommended to actively seek medical treatment, systematic examination to clarify the diagnosis.