Bleeding when you pick your nose can be caused by dry rhinitis, and it can also occur when you suffer from deviated nasal septum, nasal vestibulitis and other diseases. 1. dry rhinitis: dry rhinitis may lead to bleeding when you pick your nose, this kind of disease will cause the mucous membrane of the nasal cavity is dry, easy to cause capillary rupture, picking your nose will be due to the shedding of the scabs appear bleeding, the patient will have a decrease in nasal secretions, nasal congestion and other adverse symptoms. 2. Nasal septum deviation: Nasal septum deviation can also lead to bleeding when you pick your nose, mainly because the surface of the deviated surface is more protruding, the mucous membrane is relatively thin, easy to cause damage to the mucous membrane when stimulated from the outside world, causing capillary rupture, nosebleed, and the patient may be accompanied by headache, nasal congestion and other adverse symptoms. 3. Nasal vestibulitis: nose picking bleeding, may also be caused by nasal vestibulitis, this kind of disease will make the nasal vestibule skin erosion, may lead to subcutaneous capillary damage, picking the nose may cause rupture triggered by the bleeding, may also be due to the inflammation stimulation caused by the congestion of the capillaries, external stimulation of the rupture. This kind of situation, it is recommended to go to the hospital for relevant examination, identify the cause of the timely treatment, to avoid delaying the condition.