The patient appeared in the morning suddenly nosebleed symptoms, the specific reasons are as follows: 1, nasal cavity disease: often the nasal mucosa occurred localized erosion, ulceration, resulting in local blood vessel rupture caused by. Patients may have excessive dryness of the mucous membrane in the nasal cavity, the existence of a certain degree of inflammation of the nasal cavity, sinus infectious, as well as allergic diseases, resulting in nasal mucous membrane congestion, swelling of the state of the occurrence of the 2, insufficient intake of vitamins: some patients may be due to their own water intake is too small, or picky eating habits, resulting in insufficient intake of vitamins and other factors, but also prone to cause the symptoms of nosebleeds. 3, intranasal proliferative organisms: some patients may be due to their own drinking water is too small, or picky eating habits, resulting in insufficient intake of vitamins and other factors, is also prone to cause nosebleeds. The symptoms of nosebleed can be triggered by the presence of the factor of nasal septum deviation, or the presence of hemangioma, hemorrhagic polyp and other easy-to-bleed proliferative organisms in the nasal cavity.4. Systemic diseases: There are also some systemic diseases, such as hypertension, diabetes mellitus, blood system diseases, etc, which can trigger the symptoms of nosebleed.