Sudden heart failure occurs when heart failure gets worse very quickly. Your heart suddenly cannot pump as much blood as your body needs. Sudden heart failure causes rapid fluid buildup, or congestion, in the lungs and other parts of the body. Sudden heart failure is an emergency. You need care right away. Sudden heart...

What is chronic myeloid leukemia (CML)? Chronic myeloid leukemia (CML) is type of cancer in which the bone marrow makes too many white blood cells. In CML, young white blood cells grow abnormally, and they don't mature or die off as they should. These abnormal cells can crowd out normal blood cells and cause problems...

Discusses serious condition in which scarring damages the liver. Looks at causes, including heavy alcohol use, autoimmune chronic hepatitis, and chronic viral hepatitis. Covers symptoms like fluid buildup in the belly called ascites. Discusses transplant.

Provides links to how-to information about teen health. Includes info on acne, bullying, depression, headaches, and tobacco use. Covers talking with your teen about sex and responding to substance use. Also covers anorexia and bulimia.

Provides links to topics that cover common parenting questions about infant and toddler health. Includes info on how to stop thumb-sucking, how to manage an episode of croup, and whether to give your child antibiotics for an ear infection.

Provides links to how-to information on special health concerns of seniors. Includes healthy aging, sexuality, hearing loss, osteoporosis, and walking for fitness. Also covers writing an advance directive.

Provides links to information about digestion and digestive health. Includes info about heartburn, constipation, gas and bloating, ulcers, diverticulitis, and gallstones.

Learn how to know when you need to take a COVID-19 viral test.

What can you expect from your child at this age? Children in this age range are gaining many new skills. They feel more and more independent. They may be curious, want to explore the world around them, and act without thinking. At this age, children see everything that happens as it relates to themselves. And they...

Includes info on follicle-stimulating hormone test, pelvic inflammatory disease, and semen analysis. Also has links to info on hysterectomy, vaginal yeast infections, and enlarged prostate.

Provides links to information about skin, hair, and nail health. Includes info about skin cancer, hair loss, nail infections, acne, and skin protection.

Highlights health and lifestyle information for college-age young adults, many of whom are new to managing their own health and self-care. Includes topics such as stress, mood, sex, relationships, weight and food, women's and men's health care, and tobacco, alcohol, and drug use.

Has info on female and male genital problems, birth control, and STI testing. Also links to topics on exposure to STIs and sexuality/physical changes with aging.

Provides links to info on cancer. Topics covered include breast cancer, lung cancer, prostate cancer, and cancer pain. Links to info that can help you make a decision on diagnostic or screening tests. Includes info on treatment choices.

Many people are affected by mental health problems such as depression or panic disorders. These problems can make it harder to think clearly, manage how you feel, and work with other people. Sometimes you may feel helpless and hopeless. But you're not alone. Talking with others who suffer from these problems may help...

Use this form for any tests your doctor recommends, such as blood tests, urine tests, or X-rays. General questions What is the name of the test? Why do I need this test? What might happen if the test is delayed or not done? How accurate is the test? Are there other tests that are more accurate? How much does the test...

Discusses how to work with your doctor, how to prepare for different types of appointments, and what to do after appointments. Includes questions to ask about recommended tests and treatments.

Pain can be caused by many things, such as an injury, a surgery, or a health problem like low back pain or cancer. Long-term pain that isn't controlled can make it harder to enjoy life. But there are ways you can learn to manage pain. And managing pain can have a lot of benefits, like being able to do more activities or...