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Anaphylaxis in Children What is anaphylaxis in children? Anaphylaxis is a severe, 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 within seconds or

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

Congenital Laryngeal Stridor in Babies What is congenital laryngeal stridor? Congenital laryngeal stridor is a noisy or high-pitched sound with breathing. It is from an abnormally formed voice box (larynx). It's present at birth (congenital). What causes congenital laryngeal

Appendicitis What is appendicitis? Appendicitis is a medical emergency. It happens when your appendix becomes sore, swollen, and diseased. The appendix is a thin tube that is joined to the large intestine. It sits in the lower right part of your belly (abdomen). The appendix is a

Vascular Malformations and Hemangiomas What are hemangiomas and vascular malformations? Hemangiomas Hemangiomas are growths of blood vessels. They’re also called birthmarks. But they often can't be seen at birth. They usually form in the first few weeks of life. These growths

High Blood Pressure in Children and Teens What is high blood pressure in children? Blood pressure is the force of the blood pushing against the artery walls. Two numbers are recorded when measuring blood pressure: Systolic pressure. This is the higher number. It refers to the

Sepsis in the Newborn What is newborn sepsis? Newborn sepsis is a severe infection in an infant younger than 28 days old. The infection is in your baby’s blood. But it may affect any body system or the whole body. What causes newborn sepsis? Newborn sepsis is most often caused by

Sunburn What is sunburn? Sunburn is a red, painful skin reaction that occurs after too much exposure to ultraviolet (UV) light. UV light is a type of radiation in sunlight. The symptoms of a sunburn most often appear a few hours after sun exposure. They are often worst at 6 to 36

Bronchiolitis in Children What is bronchiolitis in children? Bronchiolitis is an infection of the lungs. It’s when your child has swelling in the smaller airways (bronchioles) of the lung. This swelling blocks air in the smaller airways. Bronchiolitis is different than bronchitis

Allergies in Children What are allergies in children? 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