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Osteoporosis What is osteoporosis? Osteoporosis is a disease that causes weak, thinning bones. This puts the bones at greater risk of breaking. The bones most often affected are the hips, spine, and wrists. What causes osteoporosis? Researchers don't know the exact cause for

Blood Clotting Disorders in Children What are blood-clotting disorders in children? Blood-clotting disorders are a group of conditions in which there is too much clotting. Blood clotting is a normal process. It stops you from bleeding too much when you have a cut or injury. Blood

Lymphatic Malformations in Children What is a lymphatic malformation in children? A lymphatic malformation is a lymphatic vessel that isn't formed correctly. The vessel traps the lymph fluid and causes cysts to form. Your child may have one or more of these cysts. Lymphatic

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

Asthma and Pregnancy Having asthma does not always mean having a complicated pregnancy. With correct asthma management and the right care during pregnancy, most people with asthma can have a healthy pregnancy. Asthma is one of the most common health problems that can complicate a

Addison Disease in Children What is Addison disease in a child? Addison disease, also called primary adrenal insufficiency, is when the adrenal glands don't make enough of the "stress" hormone called cortisol. Cortisol controls metabolism, blocks inflammatory reactions, and

Bronchopulmonary Dysplasia (BPD) in Premature Babies What is bronchopulmonary dysplasia in premature babies? Bronchopulmonary dysplasia (BPD) is the general term for long-term breathing problems in premature babies. It is also called bronchopulmonary dysplasia (BPD)chronic lung

Achondroplasia in Children What is achondroplasia in a child? Achondroplasia is the most common type of rare genetic bone disorder. The strong, flexible tissue called cartilage is not made into bone as normal. This causes a series of signs, such as short arms and legs and a large

Microcephaly in Children What is microcephaly in children? Microcephaly is a condition where a baby's head is much smaller than normal. It is most often present at birth (congenital). Most children with microcephaly also have a small brain and an intellectual disability. Some

Leukemia in Children What is leukemia in children? Leukemia is cancer that starts in young (immature) blood cells. It’s the most common kind of cancer in children. The leukemia cells grow in bone marrow and then go out into the blood. The bone marrow is the soft, spongy center of