Teen health
Learning Center
COVID-19 vaccine: Should I reschedule my mammogram?
Swollen lymph nodes caused by the COVID-19 vaccine can look like breast cancer on a mammogram. Find out what to do if you've got a mammogram scheduled.
COVID-19: Long-term effects
Learn about the possible long-term effects of COVID-19.
Caffeine and menopause symptoms: Is there a link?
Coffee, tea and other caffeinated drinks may worsen menopausal hot flashes and other vasomotor symptoms.
Can vaginal tears during childbirth be prevented?
Learn what you can do to help lower the risk of vaginal tears during childbirth.
Canker sore
Canker sore — Learn about the causes, treatment and prevention of this painful mouth sore.
Car seat safety: Avoid 9 common mistakes
Learn about common mistakes and find out what you need to do to keep your child safe on the road.
Carbon monoxide poisoning
This gas has no color, odor or taste. It can be deadly. Learn how to prevent it.
Cavernous malformations
Understand the symptoms that may occur when blood vessels in the brain or spinal cord are tightly packed and contain slow-moving blood.
Cerebral palsy
Learn about this group of conditions that affect movement. It's caused by damage to the developing brain, usually before birth.
Cervical cancer
Screening with Pap tests can reduce the risk of this cancer that begins in the cervix. Learn more about symptoms, causes, prevention and treatment.
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