Causes
Some factors that may cause malabsorption syndrome are:
• Damage to the intestine from infection, inflammation, trauma, or surgery
• Prolonged use of antibiotics
• Conditions such as celiac disease, Crohn’s disease, chronic pancreatitis, or cystic fibrosis
• Lactase deficiency, or lactose intolerance
• Certain defects that are congenital, or present at birth, such as biliary atresia, when the bile ducts don’t develop normally and prevent the flow of bile from the liver
• Diseases of the gallbladder, liver, or pancreas
• Parasitic diseases
• Radiation therapy, which may injure the lining of the intestine
• Some drugs that may injure the lining of the intestine, such as tetracycline, colchicine, or cholestyramine
https://www.healthline.com/health/malabsorption#causes
When to see a doctor
If you observe blood in the stool (it may look like dried coffee grounds) or are coughing up blood it’s recommended to seek immediate medical attention.
However, symptoms such as the following should require an appointment with the doctor:
• Continued abdominal bloating
• Fatigue
• Frequent diarrhea
• Sore tongue
• Weakness
• Weight loss
A doctor can help evaluate a person’s symptoms and start to make a diagnosis.