Rectal Bleeding (Bloody Stool): Causes, Characteristics & Treatment
The source of the bleeding determines the color of the blood. The blood is likely to be a bright red color if the source is near the anus. If the source is the colon, anus or rectum, the blood will also appear bright red. On the other hand, if the source of the bleeding is in the transverse colon and right colon, the blood is more likely to be dark red.
Characteristics of Rectal Bleeding
Melena
Some patients may experience bleeding that is black, sticky and foul-smelling. This type of bleeding is called melena. Melena occurs when the bleeding is in the colon and if bacteria digests it on the way down. Therefore, melena indicates that the source of the bleeding is the stomach, duodenum or the small intestines. However, the source may also be in the right colon.
In some cases, patients experiencing melena may also vomit. The vomit may be bright red or brown and it may look like coffee grounds. However, some food and antibiotic medications may give the stool a red or blackish appearance and patients may confuse this with melena.
Bright Red Blood
Rectal bleeding may cause bright red stool if the blood does not stay in the digestive tract long enough for bacteria to break it down. If the blood stays in the digestive tract longer, it looks less like blood when it leaves the body in stool. The source of this type of bleeding is usually the sigmoid colon and rectum.
Occult Blood
In some cases, the blood may move through the digestive tract too slowly to cause bright red blood or melena. In such cases, the bleeding may not be visible to the naked eye. This condition is called occult bleeding. Patients with occult bleeding may not notice any changes in the color of their stool.
Accompanying Symptoms
Rectal bleeding may come with other symptoms depending on the location of the bleeding. If there is massive, sudden bleeding, the patient may experience weakness, dizziness, shortness of breath and abdominal discomfort or cramping. The patient’s blood pressure may also drop and they may have pale-looking skin.
Causes of Rectal Bleeding
Hemorrhoids
This condition is the most common cause of rectal bleeding. It causes the veins in the anal and rectal area to swell. The symptoms include bleeding and a painful burning sensation in the lower abdomen. Hemorrhoids are grouped into two categories: external hemorrhoids and internal hemorrhoids.
Hemorrhoid treatment involves prescribed pain relief medication, stool softeners or bulking agents. In some cases, the swollen veins may form clots, which may cause pain and may require surgery to remove the thrombosis.
Anal Fissures
Hard stools may cause the rectal lining to tear, which can cause rectal bleeding. Bleeding from anal fissures is usually mild and bright red. The tear may expose nerves and blood vessels, causing moderate to severe pain. The symptoms of anal fissures typically decrease with stool softeners and bulking agents, as well as frequent warm water baths, fiber-rich foods and pain control medication.
Diverticulosis
This condition causes pouches called diverticula to develop and project from the bowel walls. The leading cause of diverticulosis is a lack of dietary fiber. When the diverticula become inflamed or infected, it causes diverticulitis. This condition mostly affects people older than 40 because age negatively impacts diverticulosis symptoms.
Infections
Inflammation
Another common cause of rectal bleeding is inflammatory bowel disease (IBD). Most commonly, it affects patients in their 20s or 30s. The most common types of IBD that cause rectal bleeding are Crohn’s disease and ulcerative colitis. Inflammation may cause small to moderate amounts of bright red blood in the rectum. Oftentimes, it is mixed with stool or mucus. Fever and abdominal cramping and pain are also associated with IBD. Bowel rest and steroid therapy can help relieve it.
Angiodysplasia
This condition causes inflammation in the veins and capillaries in the walls of the colon. The inflamed areas may become fragile and start to bleed. Angiodysplasia is more common in older adults.
Colon Polyps
This condition is characterized by bulging tissues from the lining of the colon. Large colon polyps may begin to bleed through the rectum. This condition may be hereditary and in some cases, the polyps may become cancerous.
Tumors
Both benign and malignant tumors in the colon and rectum may cause rectal bleeding. This condition usually affects people older than 50. However, colon and rectal tumors can also develop in younger people. The tumors typically cause minimal and slow bleeding. But advanced rectum or colon tumors may cause weight loss, constipation and changes in stool. The patient may also feel pain in the anal area.
Trauma
Sometimes, rectal bleeding can result from injury and if this is the case, it should be a serious concern. For example, a gunshot wound or a foreign object inserted into the rectum can cause trauma. This type of bleeding can cause extensive infection or massive blood loss. Rectal bleeding as a result of trauma requires immediate medical attention.
Upper Gastrointestinal Bleeding
Meckel’s Diverticulum
This is a very rare condition characterized by a bulge in the small intestine. It develops in fetuses very early in pregnancy. The vitelline duct connects the fetus to the yolk sac and it is usually absorbed seven weeks into gestation. If it isn’t fully absorbed, the fetus develops a Meckel’s diverticulum that contains cells from the stomach and the pancreas. The stomach cells release acid, which can cause ulcers and bleeding.
Rectal Bleeding in Children
If a child experiences rectal bleeding, please take it seriously. Some children may require immediate hospitalization for evaluation. The main cause of rectal bleeding in children is intussusception, which causes one part of the bowel to slide into another part. It blocks the bowel and can cause intestinal swelling and bleeding. It may also cut off blood supply to the intestine and destroy the bowel. Intussusception usually occurs within the first year of a child’s life.
Rectal Bleeding during Pregnancy
One of the leading causes of rectal bleeding during pregnancy is hemorrhoids. They are more common during the second and third trimesters. Constipation and straining during bowel movements may aggravate hemorrhoids. Pregnant women who experience rectal bleeding should consult a doctor immediately.
When to Seek Medical Attention
Mild and occasional rectal bleeding is common and usually does not need medical treatment. However, it may also indicate a serious medical condition. To be safe, it is best to seek immediate medical attention if the bleeding is accompanied by:
- Fever
- Nausea or vomiting
- Coughing or vomiting blood
- Weight loss
- Changes in bowel habits
- Black or dark red stool
- Abdominal pain or swelling
Treatment for Rectal Bleeding
The cause and source of the bleeding determine the treatment. However, if the patient does not know the cause of the bleeding, the first thing the doctor will do is ask about the patient’s medical history. The doctor may also recommend additional tests depending on the severity and the accompanying symptoms. Significant blood loss may require hospitalization. Patients may also be hospitalized if the bleeding has not stopped or if their vital signs do not return to normal.
Home Remedies for Rectal Bleeding and Digestion
- Drinking lots of water
- Avoiding straining when passing stool
- Cleansing the anus gently
- A high-fiber diet
- Avoiding alcohol
- Maintaining a healthy weight
- Avoiding spicy, fatty, heavily processed food
Supplements for Healthy Digestion
Psyllium Husk
Derived from plantago ovata seeds, psyllium husk grows all over the world and acts as a natural laxative, absorbing water and moving waste through the digestive system. According to studies, it may help relieve constipation and ease diarrhea. As a dietary supplement, the recommended dosage for psyllium husk is 5 grams (about 1 tbs.) one to three times per day with water unless a physician recommends a different dosage.
Flaxseed Oil
From the plant Linum usitatissimum, flaxseed is a natural plant-based protein. It hosts manganese and thiamine and also has fiber in its outer seeds. When a patient consumes flaxseeds with water, they expand in the stomach and break down in the digestive system and bind with cholesterol in the intestines. Take one to three flaxseed oil softgels per day with food, unless a doctor advises otherwise.
The Bottom Line
Rectal bleeding refers to bowel movements that contain blood or blood clots coming out of the anus. It may be triggered by many factors including trauma, infection, hemorrhoids and anal fissures. The color of the blood may vary depending on the location and severity of the bleeding. Bright red blood usually originates from the rectum or anus. But dark and tarry blood may be a sign of prolonged bleeding in the colon.
The location and severity of the bleeding also determine the treatment. In some cases, the patient may require surgery to treat the underlying condition. See a doctor immediately if the bleeding is a result of trauma or if the condition causes fever, nausea, vomiting, weight loss, excessive abdominal pain or if the patient coughs up blood. Also, supplements may be able to promote healthy digestion and prevent bowel changes as well as some of the GI problems that cause rectal bleeding. However, supplements are not an adequate medical treatment. Always seek medical advice and consult a doctor before starting a supplement regimen.
Originally published at https://community.bulksupplements.com on September 13, 2019.