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Kidney Failure What is kidney failure? Kidney failure happens when damage results in loss of normal kidney function. There are two types of kidney failure—acute and chronic. Acute kidney failure starts abruptly. It can sometimes be reversed. Chronic kidney failure progresses

Anorectal Malformation in Children What is an anorectal malformation in children? Anorectal malformations are birth defects, or problems that happen as an unborn baby is developing during pregnancy. With this defect, the anus and rectum don’t develop properly. They are the lower

Allergy Overview What are allergies? Allergies are due to a problem with the body's immune system. Most allergic reactions happen when the immune system reacts to a false alarm. Normally the immune system attacks harmful things, such as viruses or bacteria. But sometimes it

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

Adjustment Disorders in Children What is an adjustment disorder in children? An adjustment disorder is an unhealthy emotional or behavioral reaction to a stressful event or change in a person’s life. The response happens within 3 months of the stressful event. Some events that

Persistent Depressive Disorder in Children What is persistent depressive disorder in children? Persistent depressive disorder is a type of depression. Depression affects a child's body, mood, and thoughts. It can disturb eating, sleeping, or thinking patterns. It's not the same

Shoulder Pain and Problems What are shoulder problems? Shoulder pain and problems are common. There are many types of shoulder problems that are caused by injuries and sudden (acute) or long-lasting (chronic) inflammation of the shoulder joint. The shoulder is a complex joint

Bacterial Endocarditis in Children What is bacterial endocarditis in children? Bacterial endocarditis is an infection of the inner lining of the heart (endocardium), or the heart valves. It doesn't occur in children very often. But when it does, it can cause serious heart damage

Septic Arthritis (Infectious Arthritis) in Children What is septic arthritis in children? Septic arthritis is an infection in the joint fluid (synovial fluid) and joint tissues. It occurs more often in children than in adults. The infection usually reaches the joints through the

Low Back Pain What is low back pain? Low back pain can range from mild, dull, annoying pain, to persistent, severe, disabling pain in the lower back. Pain in the lower back can restrict mobility and interfere with normal functioning. What causes low back pain? The exact cause of