Will routine blood tests be normal for Crohn's disease?

Written by Huang Gang

Gastroenterology

Updated on April 02, 2025

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If you have Crohn's disease, conducting a routine blood test can be helpful for an auxiliary diagnosis. If the routine blood test for someone with Crohn's disease shows an increase in white blood cells, it may be indicative of a bacterial infection.

Crohn's disease can lead to persistent diarrhea, abdominal pain, and inadequate absorption of nutrients. It may also result in anemia, low red blood cell count, and low hemoglobin levels. Diagnosis can be confirmed by considering the individual's clinical symptoms in conjunction with stool routine tests and colonoscopy examinations.

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Written by Chen Rong

Gastroenterology

1min 47sec

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What are the symptoms of Crohn's disease?

Crohn's disease is a type of inflammatory bowel disease, primarily affecting the terminal ileum and adjacent colon, but can involve any digestive tract segment from mouth to anus, displaying either segmental or skip distribution. Clinically, it is characterized by abdominal pain, diarrhea, weight loss, abdominal mass, fistula formation, and intestinal obstruction. It may also present with fever and extraintestinal manifestations, including joint, skin, eye, and oral mucosa damage. This disease tends to recur throughout a person’s life, and severe cases can be prolonged and unhealing with poor prognosis. The onset age is mostly between 15-30 years, but initial attacks can occur at any age. The incidence rate is similar between genders. Abdominal pain is the most common symptom, often seen in the lower right abdomen or around the navel, presenting intermittently as cramp-like pain accompanied by bowel sounds, typically worsening after eating, and relieved by defecation or passing gas. Diarrhea is another common symptom, initially intermittent but can become persistent in later stages of the disease, with stools generally being pasty and containing mucus and pus-blood. If the lower part of the colon or anorectal area is involved, there may be mucus-bloody stools and a sensation of incomplete evacuation after bowel movements. Abdominal masses are often located in the lower right abdomen and around the navel, and fistula formation is a characteristic clinical manifestation of Crohn's disease.

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Written by Ren Zheng Xin

Gastroenterology

57sec

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Can Crohn's disease be inherited by children?

Crohn's disease is an inflammatory bowel condition, and its specific causes are not yet very clear. It may be related to environmental factors, lifestyle factors, dietary factors, and genetic factors, and it occurs more often in males than in females. The prevalence of Crohn's disease is relatively low in China. Typical symptoms of Crohn's disease include abdominal pain, diarrhea, intestinal obstruction, and some patients may experience fever, oral mucosal lesions, and liver abnormalities. The current treatment is mainly medication combined with surgical intervention. During active periods, it is important to rest, consume a low-fat, high-nutrition diet, replenish water and electrolytes timely, and if anemia is present, appropriately supplement with B12 and folic acid. Patients with hypoproteinemia should be given albumin.

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Written by Huang Gang

Gastroenterology

46sec

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How to gain weight with Crohn's disease

Crohn's disease is an illness of unknown cause, characterized by lesions at various, unfixed positions within the gastrointestinal tract, manifesting symptoms such as abdominal bloating and pain. It is generally linked inevitably to diet, immune factors, or genetic factors. People with Crohn's disease should maintain a light diet, avoid overeating, and moderately consume foods like millet porridge. When cooking millet porridge, it can be beneficial to add ingredients such as dates, Chinese yam, and goji berries, which are good for spleen and stomach regulation and aid digestion while also enhancing nutrition. Additionally, consuming lean meat porridge or egg yolk porridge in moderation can be beneficial.

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Written by Ren Zheng Xin

Gastroenterology

53sec

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Early symptoms of Crohn's disease

Early symptoms of Crohn's disease include abdominal pain and diarrhea, abdominal masses, and may also be accompanied by fever, anemia, and digestive nutritional disorders, and can affect joints, eyes, skin, and other organs. Some patients may have iritis, clubbed finger arthritis, oral ulcers, and chronic hepatitis. Crohn's disease is an inflammatory bowel disease of unknown cause, commonly occurring in the ileum and right half of the colon, with a tendency to be prolonged and recurrent, and is not easy to cure completely. Currently, treatment mainly involves medication combined with surgery to prevent complications. It is important to rest adequately and maintain a reasonable diet. (Please use medication under the guidance of a professional physician.)

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Written by Ren Zheng Xin

Gastroenterology

39sec

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Can people with Crohn's disease eat fish?

Patients with Crohn's disease can eat fish, as it is delicate and delicious, and contains rich protein that provides nutrition. Patients with Crohn's disease should adhere to a diet that is light, nutritious, and easy to digest, consuming more green vegetables such as cucumbers, tomatoes, broccoli, and cabbage. It is also appropriate to increase nutrition, since Crohn's disease is a consumptive disease, and insufficient nutritional supplementation can lead to further weight loss. However, it is essential to avoid overly greasy and spicy foods and to pay attention to dietary hygiene.