Sarcoidosis (say "sar-koy-DOH-sus") is a rare disease that creates tiny lumps of cells throughout the body. These lumps are called granulomas. They can form anywhere on the inside or outside of the body and can cause permanent scar tissue. They often form in the lungs. They may also form in the lymph nodes, liver, skin...

Includes tips to comfort a child before a medical test. Offers tips based on age, from newborns through the teen years.

Discusses chronic pain caused by problems other than cancer. Covers symptoms and how chronic pain is diagnosed. Covers conditions that can be treated, like neck pain, low back pain, and arthritis. Info on treatment with medicine and lifestyle changes.

Looks at forming a partnership with your doctor to manage your care. Suggests taking an active role by asking questions about treatment choices and costs, learning on your own, and prepping for office visits. Offers questions to ask when choosing a doctor.

What is acute lymphoblastic leukemia (ALL)? Acute lymphoblastic leukemia (ALL) is also called acute lymphocytic leukemia. It's a type of leukemia that causes the body to make too many lymphoblasts. Lymphoblasts are a type of young white blood cell. They usually become mature infection-fighting cells called lymphocytes...

You have erection problems if you can't get or keep an erection that is firm enough for you to have sex. Erection problems are also called erectile dysfunction or impotence. They are more common as you get older. There are treatments that can help.

Covers causes and symptoms of post-traumatic stress disorder (PTSD). Looks at how treatment can help and steps you can take. Discusses most effective treatments—counseling and antidepressant medicines. Includes stories from others in their own words.

Information on fibromyalgia, a syndrome that causes people to feel pain even when there is no injury. Covers symptoms and how it is diagnosed. Includes info on treatments such as medicines, exercise therapy, and cognitive-behavioral therapy.

A ketone test checks for ketones in your blood or urine. Ketones are substances that are made when the body breaks down fat for energy. Normally, your body gets the energy it needs from carbohydrate in your diet. But stored fat is broken down and ketones are made if your diet does not contain enough carbohydrates to...

A genetic test checks the DNA of your cells. It can find changes in your genes or chromosomes that may cause a genetic illness. The results may tell you about your ancestry, your health, or your risk for certain diseases. Testing can be done on a single gene, selected genes, or all of your genes (your genome). The test...

Cystic fibrosis (CF) is a common genetic disease that causes mucus in the body to become thick and sticky. The mucus builds up and causes problems in many of the body's organs, especially the lungs and the pancreas. People who have CF can have...

A urine test checks different components of urine, a waste product made by the kidneys. It checks the color, clarity (clear or cloudy), odor, concentration, and acidity (pH) of your urine. It also checks your levels of protein, sugar, blood cells,

Guides through decision to have sleep study to diagnose obstructive sleep apnea. Includes pros such as diagnosis that can lead to treatment. Also offers cons such as cost. Includes interactive tool to help you decide.

Discusses Crohn's disease, an inflammatory bowel disease. Covers symptoms, which include diarrhea and abdominal pain. Discusses treatment with medicines, including corticosteroids, immunomodulators, and biologics. Also covers treatment with surgery.

Discusses non-Hodgkin lymphoma, cancer of the cells of the lymph system. Covers what causes it and symptoms. Covers treatment, including chemotherapy. Offers home treatment tips to help manage side effects like diarrhea and fatigue.

Describes sickle cell disease. Covers causes and symptoms. Discusses how it is diagnosed. Covers treatment as the disease progresses, including with surgery or medicines like hydroxyurea. Offers home treatment tips.

What is child abuse and neglect? Child abuse means doing something that hurts a child. Neglect means not giving or doing something that a child needs. There are different types of abuse and neglect. Physical abuse. This includes hitting, kicking, shaking, pinching, and burning. It may leave bruises, cuts, or other marks...

Tests for erection problems can help you find out why you can't have or maintain an erection. This problem is called erectile dysfunction, or impotence. It's a common problem. Most erection problems are caused by a mix of blood vessel, nerve, or psychological issues. To find the cause, your doctor will first ask about...

What is colic? All babies cry, but sometimes a baby will cry for hours at a time, no matter what you do. This extreme type of crying in a baby between 3 weeks and 3 months of age is called colic. Although it is upsetting for parents and caregivers, colic is normal for some babies. Doctors usually diagnose colic when a...

What is cerebral palsy (CP)? Cerebral palsy (CP) is a problem that makes it hard for a child to control movement. It's caused by injury to the brain. Usually this injury happens before birth. The brain injury that causes CP doesn't get worse over time, but symptoms may start, change, or become more severe as a child...

Discusses polycystic ovary syndrome, a problem in which female hormones are out of balance. Discusses PCOS early symptoms like heavy bleeding or facial hair. Also covers more serious symptoms like miscarriages or infertility. Includes info on treatment.

What is Parkinson's disease? Parkinson's disease is a problem with certain nerve cells in the brain that control movement. The disease affects the way you move. It can include tremors, slow movement, stiffness, and problems with balance. Parkinson's disease gets worse over time. But usually this happens slowly, over...

Covers causes and symptoms of rheumatoid arthritis. Looks at treatment with medicine, exercise, and lifestyle changes. Discusses things you can do at home to relieve your symptoms and help control the disease. Includes importance of regular checkups.