牙龈出血是口腔科常见症状之一，是指牙龈自发性的或由于轻微刺激引起的少量流血。轻者表现为仅在吮吸、刷牙、咀嚼较硬食物时唾液中带有血丝，重者在牙龈受到轻微刺激时即出血较多甚至自发性出血。一般而言，牙龈的慢性炎症是牙龈出血的常见原因，故牙龈出血多见于牙周炎和牙龈炎患者；但有时也可以是某些系统性疾病的口腔表现，这时应予以足够重视
皮肤应检查有无干燥、鳞屑、增生、瘀点及瘀斑；口腔应检查有无口角炎、舌炎、肿胀、齿龈出血和龋齿。
The skin should be examined for dryness scaliness atrophy petechiae and ecchymoses and the mouth for angular stomatitis glossitis swollen or bleeding gums and decayed teeth.
皮肤应检查有无干燥、鳞屑、增生、瘀点及瘀斑；口腔应检查有无口角炎、舌炎、肿胀、齿龈出血和龋齿。
The skin should be examined for dryness, scaliness, atrophy, petechiae, and ecchymoses, and the mouth for angular stomatitis, glossitis, swollen or bleeding gums, and decayed teeth.
皮肤应检查有无干燥、鳞屑、增生、瘀点及瘀斑；口腔应检查有无口角炎、舌炎、肿胀、齿龈出血和龋齿。
The skin should be examined for dryness, scaliness, atrophy , petechiae, and ecchymoses, and the mouth for angular stomatitis, glossitis, swollen or bleeding gums, and decayed teeth.
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