Browse our Health Library to learn about treatments, conditions, and how Cedars-Sinai can support your healthcare needs.
22q11.2 deletion syndrome is a genetic disorder that can cause many health problems. These problems may range from heart defects and developmental delays to seizures.
Absence seizures are a type of epilepsy that is most common in children. it is characterized by a blank or absent stare.
Achalasia is a rare disease that makes it hard to swallow foods and liquids. In achalasia, there is a problem with the tube that carries food from the mouth to the stomach (esophagus).
Achondroplasia is a group of rare genetic (inherited) bone disorders. Achondroplasia is the most common type of what was once called dwarfism, in which the child's arms and legs are short in proportion to body length.
Acne affects teens and adults of all ages. It happens when oil secreted by sebaceous glands clogs the hair follicle. Bacteria infect the clogged follicle and cause pimples.
Acne is a disorder of the hair follicles and sebaceous glands. Hair follicles are the areas around the base or root of each hair. Sebaceous glands are the tiny glands that release oil (sebum) into the hair follicles. The sebum moistens ...
Hypothyroidism is when the thyroid gland doesn't make enough thyroid hormone. The condition is more common in adults. But it’s the most common thyroid disorder in children. Not enough thyroid hormone leads to signs such as slow growth, ...
Bronchitis is an inflammation of the large breathing tubes (bronchi) in the lungs. Short-term (acute) bronchitis means that the symptoms often develop quickly and don’t last long.
AFLP is a rare, but serious, liver problem in pregnancy. With AFLP the liver cells have too much fat, which can damage the liver.
Acute spinal cord injury (SCI) is when the spinal cord is damaged from an accident or other situation. An SCI may be a bruise (contusion), a partial tear, or a complete tear (transection) in the spinal cord.
Car accidents, falls, and other injuries are a common cause of acute spinal cord injury.
Addison's disease is when the adrenal glands don't make enough of two steroid hormones. The hormones are cortisol and aldosterone. Cortisol controls the body's metabolism, blocks inflammatory reactions, and affects the immune system. ...
Adenoviruses are a group of viruses that cause a variety of infections. These include the common cold, conjunctivitis, and croup.
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.
AIDS-related lymphoma is a type of cancer called non-Hodgkin lymphoma. It grows in some people with AIDS. AIDS is a disease that weakens the immune system. AIDS raises the risk for long-term (chronic) disease, such as cancer.
Poison ivy, poison oak, and poison sumac are native American plants. These plants cause an allergic reaction in most people who are exposed to them.
Rhinitis is a reaction that happens in the eyes, nose, and throat when allergens in the air trigger the release of histamine in the body. Histamine causes itching, swelling, and fluid to build up in the fragile linings of nasal passages,...
Allergies are problems of the immune system. Most allergic reactions happen when the immune system reacts to a “false alarm.” Normally, the human body defends itself against harmful things, such as viruses or bacteria. But sometimes the ...
Alpha thalassemia is an inherited blood disorder. This means it is passed down through the parent’s genes. It causes anemia in affected children. Anemia is a low red blood cell or low hemoglobin level. Hemoglobin is the part of red blood...
Amenorrhea is when a girl’s menstrual bleeding (period) doesn’t occur.
Anaphylaxis is a severe and sometimes life-threatening reaction to an allergen. An allergen is something that your child is allergic to. Anaphylaxis is a medical emergency. Your child can have a reaction to an allergen as quickly as ...
Anemia is a common problem in children. A child who has anemia does not have enough red blood cells or hemoglobin. Hemoglobin is a type of protein that allows red blood cells to carry oxygen to other cells in the body.
Anemia is when your blood has too few red blood cells. Having too few red blood cells makes it harder for your blood to carry oxygen or iron. This can affect how cells work in nerves and muscles. During pregnancy, your baby also needs ...
Anencephaly is a birth defect that affects the brain and skull bones. With this condition, the brain is not fully formed. It often lacks part or all of the cerebrum.
Ankyloglossia, or “tongue-tie,” is a type of anatomical problem of the tongue that is present from birth. It causes speech and eating difficulties in some children.
The term annular pancreas means that a ring of excess pancreatic tissue encases the first part of your small intestine. Your pancreas can still function with this irregularity, but the excess tissue can cause a number of symptoms. It can...
An anomalous coronary artery (ACA) is a heart defect. This is something your baby is born with (congenital). In ACA, the blood vessels that supply blood to your child’s heart muscle aren’t normal.
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 part of the digestive tract.
Anorexia nervosa is an eating disorder. It is a form of self-starvation. Children and teens with this health problem have a distorted body image. They think they weigh too much.
Antiphospholipid syndrome is an autoimmune disease. This happens when your immune system fights against normal cells. In this condition, your body makes antibodies that attack a kind of fat in cells. This makes your blood clot too easily.