Celiac disease

At a Glance

Celiac disease is a chronic gastrointestinal and immune disorder triggered by gluten consumption that damages the small intestine.

Typical manifestations include abdominal pain, abdominal bloating, chronic diarrhea or steatorrhea, fatigue, and weight loss; skin, bone, and neurological symptoms may also occur.

How the disease works

The exact cause is unknown, but specific genetic predisposition and gluten exposure are known to be key contributing factors.

An abnormal immune response to gluten damages the small intestinal mucosa and villi, leading to reduced nutrient absorption.

Variations in presentation among individuals

It is more common in individuals with a family history or those with Down syndrome, Turner syndrome, or Williams syndrome, and the risk and presentation may vary depending on gender and individual genetic and immune backgrounds.

The broad framework of diagnosis and management

Symptoms vary from person to person and can fluctuate, and some individuals may be asymptomatic; however, if left untreated, malnutrition, anemia, bone loss, and neurological and reproductive problems may occur.

Diagnosis generally follows a framework of performing blood tests based on medical history, family history, and physical examination, and confirming the diagnosis via small bowel biopsy during upper gastrointestinal endoscopy if necessary.

Current status of treatment

Test results must be interpreted in conjunction with symptoms, the timing of the test, gluten intake, and comorbidities; arbitrarily discontinuing gluten before diagnosis may make evaluation difficult.

Management focuses on lifelong strict gluten restriction, checking for hidden gluten, balanced nutritional intake, and assessing necessary nutritional deficiencies, and consultation with a dietitian may be helpful.

The current mainstay of treatment is a lifelong gluten-free diet, which can improve symptoms and small bowel damage or prevent further damage.

How to read clinical trials

During follow-up, symptoms, nutritional status, and related complications can be monitored; the existence or completion status of registered studies alone should not be used to determine efficacy, superiority, approval, or standard of care.

Points to verify during clinical consultations

In clinical practice, consultations should address confirming symptoms, dietary habits, family history, the possibility of gluten exposure from supplements/products being taken, nutritional deficiencies, and the need for follow-up examinations.