虽然老年人经常有牙齿松动,牙龈发炎,但一般不会出现自发性牙龈出血。如果老年人无明显原因发生牙龈出血,应高度警惕以下三种疾病。第一是血液方面的疾病。如血小板减低、再生障碍性贫血、急性粒细胞型白血病等。血液病引起的牙龈出血有一定的特点,那就是多处牙龈渗血,不是单一牙龈出血,而且没有明显的出血点,出血范围比较广,常伴有无力和皮肤出血斑。第二是肝脏疾病。肝炎、 Although the elderly often have loose teeth and gums, spontaneous gingival bleeding does not occur. If there is no obvious reason for elderly bleeding gums, should be highly alert to the following three diseases. The first is blood diseases. Such as thrombocytopenia, aplastic anemia, acute myelogenous leukemia and so on. Gingival bleeding caused by blood diseases have certain characteristics, that is, multiple gums bleeding, bleeding is not a single gingival bleeding, but no obvious point of bleeding is relatively wide, often accompanied by weakness and skin bleeding spots. The second is liver disease. hepatitis,