Nose Bleeding Causes More Condition_symptoms What Do You Call The Disease That Causes Nose Bleeding?

What do you call the disease that causes nose bleeding? - nose bleeding causes more condition_symptoms

My son suffers from epistaxis during the last 4 days. Even at night, the nose bleeds for no reason. I took him to ENT specialist, but the doctor told me, perhaps because the nail of my son because my son used to put the nails in his nose. I am not convinced by the theory of the doctor, because even though my son is sleeping, his nose still bleeding so much blood.