What Causes Blood in the Mouth?
Disease description:
Recently, I’ve constantly noticed a strong metallic taste in my mouth, and upon inspection, I discovered bleeding. I’d like to know what could be causing blood in the mouth.
Doctor's answer (1)
Dr. Zhang Liwen
Causes include gingivitis and oral mucosal injury. Inflammation of the gums leads to swelling and capillary dilation within the gingival tissue, resulting in bleeding during chewing, swallowing, touching, or toothbrushing—manifesting as oral bleeding. Oral mucosal injury causes rupture of capillaries at the wound site, allowing blood to leak from the cut ends of the vessels. Additionally, blood may originate from the respiratory or gastrointestinal tract and enter the oral cavity via these pathways, thereby appearing as oral blood.
