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Chronic Bronchitis What is chronic bronchitis? Bronchitis is inflammation of the breathing tubes. These are the airways called bronchi. This inflammation causes too much mucus to be made and other changes. Bronchitis can be acute (short-term) or chronic (long-term). Chronic

Common Tests During Pregnancy These are some of the more common tests done during pregnancy. First trimester prenatal screening tests First trimester screening is a combination of fetal ultrasound and maternal blood testing. It can help find out the risk that the fetus has

Meningitis in Children What is meningitis in children? Meningitis is a swelling (inflammation) of the thin membranes that cover the brain and the spinal cord. These membranes are called the meninges. What causes meningitis in a child? Meningitis is most often caused by a

Facts About Diabetes What is diabetes? When you have diabetes, your body has a problem with insulin. It doesn't make enough insulin or can't use the insulin it makes (insulin resistance). Insulin is a hormone released by the pancreas. It helps sugar (glucose) enter your cells to

Atherosclerosis What is atherosclerosis? Atherosclerosis is thickening of the walls of the arteries. It is also known as hardening of the arteries. It is caused by a buildup of plaque in the inner lining of an artery. Plaque is made up of deposits of fatty substances, cholesterol

Coronary Heart Disease What is coronary heart disease? Coronary heart disease happens when the innermost layer of the coronary arteries becomes inflamed and narrowed. This is caused by a buildup of fatty deposits called plaque. These deposits may start in childhood and continue

Obesity in Children and Teens What is obesity in children and teens? Obesity is when a person has too much body fat. Without treatment, obesity can become a serious, long-term disease. What causes obesity in a child or teen? In many ways, childhood obesity is a puzzling disease

Types of Genetic Testing Genetic tests look for changes in a person's genes. They can also look for changes in the amount, function, or structure of key proteins coded by genes. Genetic tests can look at the DNA or RNA that play a role in certain conditions. Abnormal test results

Arthritis Diagnosis Diagnosing arthritis may be difficult. There are more than 100 different types of arthritis. Many symptoms are similar among the different conditions affecting the joints. Arthritis may be generally categorized into the following groups: degenerative arthritis

Precocious Puberty What is precocious puberty? Puberty that happens early is called precocious puberty. This means a child's physical signs of sexual maturity develop too soon. This includes breast growth, pubic hair, and voice changes. These are known as secondary sexual