鼻衄的原因不外乎局部和全身两种。1.局部原因:(1)鼻中隔前下区血管扩张和溃疡,当用力擤鼻子、打喷嚏或咳嗽时引起出血;(2)外伤,以挖鼻损伤最多见,其次为打击伤和摔伤;(3)干燥性鼻炎、萎缩性鼻炎和鼻窦炎均可引起出血;(4)鼻腔肿瘤,如鼻咽部纤维血管瘤、血管瘤等;(5)增殖体肥大和发炎;(6)鼻腔异物造成,常有持续性单侧鼻衄,多见于5岁以下小儿:(7)鼻中 The reason for epistaxis is nothing more than local and systemic two. 1. Local causes: (1) nasal septal anterior vascular dilatation and ulcers, when forced to nose, sneezing or coughing cause bleeding; (2) trauma to dig the nose to see the most common injuries, followed by the fight against injury and falls; (3) rhinitis, atrophic rhinitis and sinusitis can cause bleeding; (4) nasal tumors, such as nasopharyngeal hemangiomas, hemangiomas, etc .; (5) proliferative body hypertrophy and inflammation; (6) nasal foreign body Caused by, often persistent unilateral epistaxis, more common in children under 5 years of age: (7) nose