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Pseudomembranous colitis
This inflammatory colon condition is usually caused by the bacterium Clostridioides difficile. The use of high-dose antibiotics may let these germs grow unchecked.
Proctitis
Proctitis means inflammation of the rectal lining. This condition is often a treatment side effect or part of a more generalized disease.
Primary sclerosing cholangitis
Liver damage can result from this potentially serious disease in which scarring blocks the bile ducts. A liver transplant is the only known cure.
Primary immunodeficiency
Frequent infections could mean you have an immune system disorder. The conditions in this category are usually caused by genetic changes.
Primary biliary cholangitis
Primary biliary cholangitis is a type of liver disease that damages the bile ducts. Early recognition and treatment may help prevent complications.
Porphyria
This group of disorders results from a buildup of natural chemicals in the body that affect the nervous system and skin. Learn how to avoid symptom triggers.
Polyhydramnios
Learn about the symptoms, causes and treatment for this condition, in which too much amniotic fluid builds up during pregnancy.
Pheochromocytoma
Find out more about the symptoms, causes and treatment of this rare adrenal gland tumor, which usually is not cancer.
Peritonitis
Learn about the causes, symptoms and treatment of peritonitis.
Peripheral neuropathy
Learn what may cause the prickling, tingling or numb sensations of nerve damage and how to prevent and treat this painful disorder.
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