Table of Contents
- Stool color, texture, and form changes facts
- What are symptoms of stool color changes?
- What does it mean when your stool color changes in color, texture, or form?
- What is the color of normal stool?
- What are the causes of stool color, texture, and form changes?
- Green stools
- Yellow, greasy, and foul smelling stool
- Bright red stools
- Black tarry stools
- Light-colored white or clay-colored stools
- Maroon stools
- Mucous in the stool
- Drugs that change stool color
- Stool that floats
- Changes in the size and shape of stool
- What kind of doctor treats stool color changes?
- How is the cause of stool color changes diagnosed?
- When should I contact my doctor about stool color or texture changes?
- Stool color chart
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Yellow, greasy, and foul smelling stool
There are a variety of reasons why stool will be yellow, greasy, and foul smelling. It can be due to the intestine's inability to digest and absorb fat because of diseases of the intestinal lining (such as in celiac disease and cystic fibrosis) because the pancreas is unable to manufacture adequate digestive enzymes (such as with chronic pancreatitis or pancreatic cancer that blocks the pancreatic duct, or there is not enough bile being delivered to the intestine (such as in cancer of the liver or bile ducts that are blocked). The yellowness, greasiness, and foul smell is due to the undigested fat.
Kasper, D.L., et al., eds. Harrison's Principles of Internal Medicine, 19th Ed. United States: McGraw-Hill Education, 2015.