Blood in Your Saliva: Causes, Symptoms and More!

Blood appearing in saliva may be due to bleeding in the digestive system or respiratory tract. But it can also indicate severe conditions like cancer!

Seeing blood in the saliva may be alarming to many people, but it may or may not be associated with a serious condition. One may spit blood, cough out blood or even vomit blood, and the causes of these are varied. Blood in the saliva may be coming from the gastrointestinal tract or the respiratory tract, and the severity may vary depending on the cause. Here are some common causes why a person may see blood in the saliva.

Causes of Blood in Saliva

Blood appearing in saliva commonly come from the mouth, the nose, and other parts of the gastrointestinal and respiratory tracts.

Gastrointestinal problems can cause one to spit blood, and these conditions include:

  • Inflammation of the esophagus or esophagitis
  • Inflammation of the lining of the stomach or gastritis
  • Inflammation of the gums or gingivitis
  • Ulcers in the mouth
  • Erosions in the lining of the stomach and small intestine or peptic ulcers
  • Recent tooth extraction or dental work

Bleeding can also come from respiratory tract problems, leading one to find blood in the saliva, such as:

  • Nosebleed
  • Inflammation of the large airways or bronchitis
  • Congestive heart failure, resulting in blood leaking through the lungs
  • Lung infection with pneumonia
  • Collapsed lung or pneumothorax
  • Lung infection with tuberculosis

There are less common, but more severe and life-threatening conditions that can cause blood to be found in the saliva, such as:

  • Bleeding from cancer in the mouth
  • Bleeding from esophageal cancer
  • Bleeding esophageal varices, which are swollen veins in the esophagus that have ruptured
  • Bleeding from stomach cancer
  • Bleeding from lung cancer
  • Bleeding from nasopharyngeal cancer
  • Bleeding stomach or intestinal ulcers, or perforated peptic ulcer
  • Internal trauma and bleeding involving gastrointestinal or respiratory organs
  • Buildup of fluids in the lungs (pulmonary edema) resulting from congestive heart failure

Symptoms and Complications of Blood in Saliva

There are various symptoms that may accompany the saliva having blood phenomenon depending on the cause.

Symptoms related to gastrointestinal causes of spitting blood include:

  • Abdominal cramping or pain
  • Abdominal distension, swelling or bloating
  • Blood streaks in the stools
  • Bloody stool, which may appear red, tarry or black
  • Diarrhea
  • Bleeding from the rectum or blood in stools
  • Vomiting bright red blood or black "coffee ground" material

Other symptoms include:

  • Light-headedness or dizziness
  • Rapid pulses
  • Lethargy, fainting or changes in levels of consciousness
  • Fatigue
  • Paleness of the skin
  • Weakness

Life-threatening conditions may be accompanied by serious symptoms, such as:

  • Loss of consciousness and unresponsiveness
  • Dizziness
  • Breathing problems like shortness of breath, labored breathing, difficulty breathing, and wheezing
  • Not breathing
  • Choking
  • Severe abdominal pain
  • Vomiting fresh blood or black coffee ground material
  • Weakness

When these accompanying symptoms, one must seek immediate medical attention to avoid potential complications.

Complications from spitting blood in the saliva usually result from serious conditions, and these include:

  • Very low red blood cell count or anemia
  • Circulatory shock
  • Necessity for blood transfusion
  • Cancer has spread, invading other organs
  • Infection has spread

One must not ignore these warning signs and symptoms. Whatever the cause of these symptoms, one must seek proper diagnosis and treatment.

Treatments for Blood in Saliva

Occasional bleeding from the mouth and gums may be treated by proper oral hygiene. However, more serious causes need more intensive medical care.

  • Bleeding from the gastrointestinal tract may be diagnosed by inspection of the organs using an endoscopic technique, where a minimally invasive device that has a camera is passed from the mouth to the esophagus and the stomach. When the underlying cause of bleeding anywhere in the digestive track is identified, treatments can be applied using the same endoscopic technology.
  • Active bleeding in the upper gastrointestinal tract can be controlled by using heat to cauterize, directly injecting chemicals into the site using a needle, or clipping a bleeding blood vessel through the endoscope. If bleeding cannot be controlled with this technique, surgery may be required. Recurrence of bleeding may be prevented by taking prescribed medications.
  • Bleeding from the respiratory system. Infections such as tuberculosis in the lungs may be treated with antibiotic medications. Coughing up blood from the respiratory system may also be examined and treated through an endoscopic technique called bronchoscopy. A balloon may be inflated in the site to stop active bleeding. A bleeding bronchial artery may also be blocked using metal coils or other substances in a technique called embolization. Severe bleeding in the lungs may need lung resection or peumonectomy.
  • Cancer in the respiratory or gastrointestinal tract may be treated medically or surgically, and may also require chemotherapy with or without radiotherapy. Inflammatory conditions may also require steroid therapy.
  • Transfusion of blood. People who lose large amounts of blood may need transfusion of blood or other special medications to reduce blood loss.

When to See a Doctor

Seeing blood in saliva may or may not be a serious condition. You must see a doctor when you notice blood for more than a week, or when it comes and goes or gets more severe over time. You must also consider seeking medical help when there are other significant symptoms such as paleness, chest pain, weight loss, high fever (more than 101 degrees), night sweats, anemia, shortness of breath and persistent pain.

If left untreated, severe cases of spitting or vomiting blood can result in a life-threatening situation. Call 911 or go to the hospital for serious symptoms, such as difficulty breathing, vomiting blood (fresh or black), severe abdominal cramps, or changes in levels of consciousness.


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