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Chronic lymphocytic leukemia
Learn about this cancer that forms in white blood cells called lymphocytes. Treatments include chemotherapy, targeted therapy and immunotherapy.
Claudication
Too little blood flow to the legs and arms can cause pain, especially during exercise. Learn more about diagnosing and treating intermittent claudication.
Colon polyps
Have you had your colonoscopy? Colon polyps typically don't cause symptoms, so it's important to have regular screenings.
Constipation
Learn how to prevent and treat infrequent or painful passing of stool.
Coronary artery disease
Know the warning signs of this common heart condition often caused by clogged, narrowed arteries and how lifestyle changes can lower your risk.
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.
Craniopharyngioma
Learn more about this noncancerous tumor that forms near the brain's pituitary gland, including diagnosis and treatment options.
Cystic fibrosis
This inherited condition causes severe damage to the lungs, digestive system and other organs. Learn about improvements in screening and treatments.
Dehydration
Dehydration is especially common and dangerous for infants, young children and older adults. Learn more about treating and preventing dehydration.
Delayed ejaculation
Learn what can cause delayed or absent ejaculation and how it can be treated.
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