allergic colitis
Introduction
Introduction to allergic colitis Allergic colitis is a syndrome in which constipation, diarrhea or constipation alternates with diarrhea, that is, a syndrome characterized by laxative abnormalities and abdominal pain and flatulence. It is one of the most common digestive diseases, belonging to gastrointestinal dysfunction, and its pathogenesis is related to mental, psychological, dietary and environmental factors. The disease is more common in young people than women. basic knowledge The proportion of sickness: 0.01% Susceptible people: no specific population Mode of infection: non-infectious Complications: anal canal, rectum, colon stenosis
Cause
Causes of allergic colitis
Allergic reaction (27%):
Allergic reaction, also called hypersensitivity reaction, refers to a specific immune response that occurs when the body responds to certain antigens and then receives the same antigen again, which is mainly caused by physiological dysfunction or tissue damage. Skin allergies, skin itching, redness and swelling that people encounter every day are an allergic reaction.
Changes in intestinal motor function (20%):
Gastrointestinal dysfunction, also known as gastrointestinal neurosis, is a general term for a group of gastrointestinal syndromes. Mental factors are the main causes of this disease, such as emotional stress, anxiety, difficulties in life and work, troubles, and accidental misfortunes. Etc., can affect the normal activities of gastrointestinal function, and then cause dysfunction of the gastrointestinal tract.
Psychological factors (15%):
The patient's own mentality is problematic.
The cause of allergic colitis is unknown, so far there is no conclusion. It is generally believed that allergic colitis is inextricably linked with mental, psychological, diet, and environment. There are two main sources of virulence factors, one is from the process of self-oxidation and metabolism, and the other is from environmental pollution, radiation, and bad habits.
Allergic colitis refers to an unexplained change in intestinal motor function, no structural changes in X-ray and endoscopy. It is generally believed that it may be associated with advanced neurological dysfunction, and some cases may also be manifestations of allergic reactions in the colon.
Prevention
Allergic colitis prevention
First, pay attention to developing good eating habits and lifestyles. It is recommended to eat less or not eat foods rich in saturated fat and cholesterol in the daily diet, such as fat meat, animal internal organs, etc., and try to stay away from fried foods. Eat more foods rich in dietary fiber, such as soy and its products. Eat more fresh vegetables and fruits, and eat walnuts, peanuts, dairy products and seafood in moderation.
Second, pay attention to family history. If someone in a person's immediate family member has colitis, the risk of colitis increases, and those with a family history should have a regular survey. Regular fecal occult blood tests, digital rectal examinations, and colon endoscopy in high-risk populations are effective methods for early detection of colitis.
Third, it is necessary to prevent precancerous lesions of the large intestine. For colon adenomatous polyps, especially for multiple colonic polyposis in the family, the lesion should be removed early. Patients with chronic ulcer colitis have a high chance of developing colitis. If the condition changes, they should go to the hospital for examination and actively treat.
Complication
Allergic colitis complications Complications Anal canal, rectum, colon stenosis
Intestinal stenosis: occurs in a wide range of lesions, the duration of the disease lasts for more than 5-25 years, the site is more common in the left colon, sigmoid colon or rectum, clinically asymptomatic, can cause intestinal obstruction in severe cases, the disease appears When the intestine is narrow, be alert to the tumor and identify benign and malignant.
Symptom
Allergic colitis symptoms Common symptoms Abdominal pain, bloating, diarrhea, constipation, insomnia, palpitations, sweating
Mainly manifested as abdominal pain, bloating, diarrhea, constipation, mucus, etc., with abdominal pain and chronic diarrhea as the main performance. Abdominal pain is mainly in the left lower abdomen and lower abdomen, and the weight can be relieved after defecation or exhaust. The frequency of bowel movements increases, 2 to 6 times a day or more, mostly mushy or loose, but without blood. Some patients have bowel movements once every 4 to 7 days, dry stools, and difficulty in defecation. In addition, there may be symptoms of upper gastrointestinal tract such as abdominal discomfort, hernia, acid reflux, heartburn, and the like. Many patients also have symptoms of autonomic dysfunction such as fatigue, body weight loss, insomnia, anxiety, dizziness, and headache. Clinically, allergic colitis is divided into four main types: diarrhea, abdominal pain, alternating diarrhea and constipation. For abdominal discomfort or long-term recurrent abdominal pain, abdominal pain is mostly in the left lower abdomen, which is generally persistent dull pain, which can last from several minutes to several days. It can be temporarily relieved after defecation and venting. There may also be symptoms of neurovascular instability such as headache, fatigue, insomnia, palpitations, sweating, and hernia.
Examine
Examination of allergic colitis
1. Barium meal examination: Due to the contraction of the intestines, the emptying is rapid and the intestines appear very thin. After 6 hours of service, the sigmoid colon and rectum can be reached, and even a large amount of expectorant is excluded. It can be seen that the "line sample sign" indicates that a large amount of mucus remains in the intestine, and a small amount of tincture adheres to the sticky mucus.
2. Barium enema examination: manifested as intestinal fistula contraction, increased tension, and frequent irritation of the local intestinal wall, that is, in the same case examination, the appearance of mucosal folds in the filling phase is different, so mucosal folds Variability is characteristic of it.
Diagnosis
Diagnosis and diagnosis of allergic colitis
Differential diagnosis
(1) Intestinal stenosis of allergic colitis, the colonic bag disappears, and the linear sign is similar to ulcerative colitis.
(2) In addition to stenosis, the intestinal tract of ulcerative colitis is shortened into a dachshund tube.
(3) Allergic colitis is characterized by mucosal fold variability and can be used as one of the main points of differential diagnosis.
How to distinguish between allergic colitis
Allergic colitis refers to an unexplained change in intestinal motor function, no structural changes in X-ray and endoscopy. It is generally believed that it may be associated with advanced neurological dysfunction, and some cases may also be manifestations of allergic reactions in the colon. Allergic colitis is one of the most common diseases of the digestive system. It belongs to gastrointestinal dysfunction, and its pathogenesis is related to mental, psychological, dietary and environmental factors.
