Fitness basics
Learning Center
Burns
Understand how to prevent, treat and recover from burns ranging from minor to life-threatening.
Bursitis
Bursitis is the painful inflammation of small, fluid-filled sacs that cushion the bones, tendons and muscles near your joints. Ice can ease symptoms.
C. difficile infection
Learn more about this diarrhea-causing infection that often occurs after antibiotic use. Many, but not all, people who get it are in health care facilities.
COPD
This chronic inflammatory lung disease causes obstructed airflow from the lungs, resulting in breathing difficulty, cough, mucus production and wheezing.
CSF leak (Cerebrospinal fluid leak)
Cerebrospinal fluid leaks may start in the brain or spine, causing headaches, dizziness and other symptoms.
Calciphylaxis
Learn more about this uncommon condition that affects small blood vessels and skin tissues, causing painful skin ulcers.
Cancer
Find out the basics about cancer, including symptoms, causes and treatments. Learn steps you can take to prevent cancer.
Canker sore
Canker sore — Learn about the causes, treatment and prevention of this painful mouth sore.
Carbon monoxide poisoning
This gas has no color, odor or taste. It can be deadly. Learn how to prevent it.
Carcinoid syndrome
Find out about skin flushing and other symptoms of this syndrome caused by a rare cancer called a carcinoid tumor.
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