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What does it mean when you have blood clots in your mouth?

Published in Oral Health 3 mins read

Having "blood clots" in your mouth is generally not about true clots, but rather refers to blood blisters, which can appear as dark spots. These are more accurately described as fluid-filled blisters with blood within them. The reference highlights that these oral blood blisters form when blood vessels under a pre-existing blister rupture.

Understanding Blood Blisters

When you see what might look like a "blood clot" in your mouth, it’s most likely a blood blister. These blisters occur when:

  • Blood vessels rupture: According to the reference, blood blisters form when blood vessels beneath an existing blister break. This causes blood to accumulate, forming a raised, dark-colored blister.
  • Trauma: Simple things like biting your cheek or eating hard food can cause trauma to the mouth lining, potentially leading to a blood blister.
  • Food allergies: Allergic reactions to certain foods can trigger inflammation and the formation of blood blisters.
  • Low platelet count: Conditions that lower platelet count in your blood can increase the likelihood of bruising and blood blisters, as platelets are essential for normal clotting.

Why They Appear Dark

The dark color within the blister is due to the presence of blood. The ruptured blood vessels leak blood into the tissue, creating the characteristic dark or reddish-purple appearance of the blister.

Distinguishing from True Blood Clots

It's essential to differentiate blood blisters from true blood clots, which are solid masses of coagulated blood. True blood clots in the mouth are rare and are often linked to serious underlying medical issues, including:

  • Bleeding disorders: Conditions that impair the blood's ability to clot normally.
  • Medications: Certain drugs, such as anticoagulants, can increase the risk of abnormal clotting or bleeding.
  • Underlying health issues: Conditions affecting blood circulation can contribute to abnormal clot formation.

When to Seek Medical Attention

Although blood blisters are typically harmless and resolve on their own, it's important to monitor them. Seek medical advice if:

  • The blister is unusually large, painful, or persists for more than two weeks.
  • You experience frequent blood blisters.
  • You have other symptoms like bleeding gums, easy bruising, or unexplained fatigue.
  • You have concerns about a potential underlying health condition.

Prevention Tips

  • Gentle oral care: Brush your teeth and gums gently.
  • Avoid harsh foods: Be mindful of foods that may cause trauma to your mouth.
  • Manage underlying conditions: If you have a bleeding disorder or other medical conditions that could affect blood clotting, work with your healthcare provider to manage them effectively.

In summary, a "blood clot" in the mouth is most likely a blood blister resulting from ruptured blood vessels below an existing blister. These are often caused by minor trauma, allergies, or, in some cases, low platelet counts. True clots are rare and warrant immediate medical attention.

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