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• Costello Syndrome

  Costello syndrome is a very rare disorder that affects multiple organ systems. It causes causes problems that affect a child's heart, muscles, bones, skin, brain, and spinal cord.

• Diamond-Blackfan Anemia

  Diamond-Blackfan anemia happens when bone marrow doesn’t make enough red blood cells. It also can cause physical changes in their heart, head, and upper body.

• Milk Allergy

  Milk allergy can cause serious reactions. Find out how to keep kids safe.

• Milk Allergy in Infants

  Almost all infants are fussy at times. But some are very fussy because they have an allergy to the protein in cow's milk, which is the basis for most commercial baby formulas.

• Peanut Allergy

  If your child is allergic to nuts or peanuts, it's essential to learn what foods might contain them and how to avoid them.

• Poison Ivy

  Most people get a reaction to poison ivy. Check out this article for tips on what to do and how to avoid poison ivy.

• PrEP (Pre-Exposure Prophylaxis)

  PrEP (pre-exposure prophylaxis) is when someone takes medicines every day to lower his or her chances of getting HIV.

• Psoriasis

  Psoriasis causes skin cells to build up on the surface of the skin where they form itchy, red patches and thick scales. Find out what causes psoriasis and how to help your child deal with it.

• Sesame Allergy

  Sesame is one of the most common foods that can cause allergic reactions. Avoiding sesame means more than just not eating it. It also means not eating any foods that might contain sesame as ingredients.

• Severe Combined Immunodeficiency

  Severe combined immunodeficiency (SCID) is an immune deficiency that can be successfully treated if it's found early.

• Shellfish Allergy

  Shellfish allergy can cause serious reactions. Find out common symptoms of allergic reactions and how to respond.

• Soy Allergy

  Soy is found in many foods and it's a common food allegy. Find out how to help kids with an allergy stay safe.

• Stem Cell Transplants

  Stem cells help rebuild a weakened immune system. Stem cell transplants are effective treatments for a wide range of diseases, including cancer.

• Thrombocytopenia

  Thrombocytopenia is when someone has too few platelets in their bloodstream. Many things can cause it and most can be treated.

• Tree Nut Allergy

  Sometimes people outgrow some food allergies over time, but tree nut allergies are lifelong in many people.

• Alopecia

  Alopecia areata is a condition that causes hair loss on the scalp and sometimes elsewhere on the body.

• Celiac Disease

  Celiac disease happens when someone has a food intolerance to gluten. Here's how to manage symptoms and prevent damage to the intestines.

• Coronavirus (COVID-19) and Multisystem Inflammatory Syndrome in Children (MIS-C)

  Multisystem inflammatory syndrome in children (MIS-C) causes inflammation throughout the body. Doctors are trying to find out how these symptoms are related to coronavirus (COVID-19) infection.

• Eczema (Atopic Dermatitis)

  Eczema can be an itchy nuisance and cause scratching that makes the problem worse. Many kids who have eczema today will be over it by the time they're teens.

• Egg Allergy

  Helping your child manage an egg allergy means reading food labels carefully, being aware of what he or she eats, and carrying the right medicines in case of an allergic reaction.

• First Aid: Allergic Reactions

  Most allergic reactions aren't serious, but severe reactions can be life-threatening and need medical care right away.

• Fish Allergy

  Fish allergy can cause a serious reaction. Find out how to keep kids safe.

• Food Allergies

  Food allergies can cause serious and even deadly reactions in kids, so it's important to know how to feed a child with food allergies and to prevent reactions.

• Food Allergies Center

  Food allergies can be serious, so it's very important to quickly identify and treat reactions. Learn about food allergies here so you know what to do when a child has a food allergy.

• Going to School With Food Allergies

  With preparation and education, a child with a food allergy can stay safe at school.

• Henoch-Schönlein Purpura (HSP)

  Most kids who develop this inflammation of the blood vessels (marked by a raised red and purple rash) make a full recovery and have no long-term problems.

• Hives (Urticaria)

  Has your child broken out in welts? It could be a case of the hives. Learn how to soothe itchy bumps and help your child feel better.

• How Do Doctors Test for Food Allergies?

  Find out what the experts have to say.

• Immune Thrombocytopenia

  Immune thrombocytopenia happens when the immune system attacks platelets. Viral infections often trigger this in children, but it usually goes away within 6 months.

• Inflammation

  Inflammation is one way the body reacts to infection, injury, or other medical conditions. Many things can cause it.

• Insect Sting Allergy

  Insect sting allergies can cause serious reactions. Find out how to keep kids safe.

• Kids and Allergies

  Many kids have an allergy. Find out how allergies are diagnosed and how to keep them under control.

• Air Pollution and Asthma

  Ground-level ozone and other air pollutants can trigger asthma flare-ups. But there are steps you can take to minimize your child's exposure.

• Allergies Center

  This page has information about different types of allergies, how to prevent reactions, and what to do if your child has allergies.

• School and Asthma

  Asthma flare-ups are the main reason kids with asthma miss school. But well-managed asthma is far less likely to result in a sick day.

• Allergy Shots

  Many kids battle allergies year-round, and some can't control their symptoms with medications. For them, allergy shots (or allergen immunotherapy) can help.

• Seasonal Allergies (Hay Fever)

  At various times of the year, pollen and mold spores trigger the cold-like symptoms associated with seasonal allergies. Most kids find relief through reduced exposure to allergens or with medicines.

• What Are Nebulizers and Inhalers?

  Find out how these asthma tools help kids take their medicines.

• What’s an Asthma Action Plan?

  Find out how this written plan can help you care for your child with asthma.

• Exercise-Induced Asthma

  Many kids with asthma have symptoms when they exercise. But with careful management, they usually can do anything their peers can do.

• Do Allergies Cause Asthma?

  Allergies don't cause asthma, but kids who have allergies are more likely to get asthma.

• Food Protein Induced Enterocolitis Syndrome (FPIES)

  Food protein induced enterocolitis syndrome, also called FPIES, is a type of delayed food allergy. Someone with FPIES must avoid the foods that might trigger a reaction.

• Pollen-Food Allergy Syndrome

  Pollen-food allergy syndrome happens when someone with a pollen allergy eats certain foods. It only affects the lips, mouth, and throat.

• Definition: Exercise-Induced Asthma

  Some people have exercise-induced asthma, which means that their asthma symptoms (such as coughing, wheezing, or shortness of breath) are triggered by exercise or physical activity.

• What Is Skin Testing for Allergies?

  A scratch or skin prick test is a common way doctors find out more about a person's allergies.

• 5 Ways to Prepare for an Allergy Emergency

  Being prepared for an allergy emergency will help you, your child, and other caregivers respond in the event of a serious reaction.

• Serious Allergic Reactions (Anaphylaxis)

  Kids with severe allergies can be at risk for a sudden, serious allergic reaction called anaphylaxis. The good news is that when treated properly, anaphylaxis can be managed.