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IgA nephropathy (Berger disease)
This disease causes kidney inflammation that, over time, can interfere with the kidneys' ability to filter waste from the blood.
Coronavirus disease 2019 (COVID-19)
Coronavirus disease 2019 (COVID-19) is an illness caused by the virus SARS-CoV-2. Learn more about the symptoms, risks and ways to protect yourself.
Hepatitis C: What happens in end-stage liver disease?
End-stage complications of hepatitis C include liver failure and liver cancer.
Bile reflux
This digestive problem tends to develop in people who've had stomach surgery and sometimes contributes to gastroesophageal reflux disease (GERD).
Eosinophilic esophagitis
Learn more about the causes and treatment of eosinophilic esophagitis — a digestive disease caused by an allergic reaction.
Blastocystis hominis
This microscopic organism is a parasite that can live in your digestive system. Whether it causes digestive problems isn't clear.
Zollinger-Ellison syndrome
In this rare disease, tumors in the digestive tract cause excess production of a certain hormone. High levels of this hormone increase stomach acid, leading to peptic ulcers.
Ulcerative colitis
This type of inflammatory bowel disease affects the innermost lining of your digestive tract. Learn about available treatments for this often exhausting condition.
Gastrointestinal bleeding
Bleeding from anywhere in your digestive tract is a symptom of a disorder. Bleeding can be hidden or obvious, slight or severe.
Capsule endoscopy
This procedure involves swallowing a tiny capsule with a camera inside to get a view of the inside of the digestive tract. Find out what to expect.
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