What’s with the blood in your mouth in the morning?

Blood in the mouth in the morning may be accidental injury to the oral mucosa or have long-term chronic periodontitis triggered by bleeding gums, but it may also be caused by respiratory diseases or blood diseases, etc., specifically need to go to the hospital to check the source of bleeding.
1. Trauma. Blood in the mouth in the morning may be the result of accidental injury to the buccal mucosa or lingual mucosa caused by the presence of sharp tooth tips or poor restorations in the mouth during sleep at night. Oral examination reveals bleeding from mucosal tears.
2. Chronic periodontitis. In chronic periodontitis, the gums bleed easily when touched or bleed spontaneously, and bleeding occurs in the mouth after waking up in the morning. Clinical examination reveals red, swollen and painful gums at the edges of the teeth.
3. Other diseases: Bleeding caused by respiratory diseases, such as nosebleeds or airway bleeding, bleeding caused by blood clotting dysfunction occurring in hematologic diseases.
Blood in the mouth in the morning can be caused by a variety of reasons, it is recommended to consult a doctor to do oral and systemic examination to confirm.