Diseases and Conditions

Find doctor-approved information about symptoms, causes, diagnosis, treatment and prevention of common diseases and conditions.

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All conditions in Kids and Teens
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  • Mother holding a thermometer in the foreground with a sick child sleeping in the background

    Febrile Seizures

    Febrile seizures occur in young children with fevers above 102°F (38.9°C). They aren’t as dangerous as they appear and usually…

  • Mother holding a thermometer in the foreground with a sick child sleeping in the background

    Fever in Infants and Children

    A baby or infant's first fever can be scary. Learn how to take your child’s temperature, how to bring down…

  • A little girl lies in bed with a thermometer in her mouth. Fifth disease is a mild viral infection that causes a bright red rash on the face. Other symptoms include fever, sore throat and headache.

    Fifth Disease

    Fifth disease is a mild viral infection that causes a bright red rash on the face. It also has cold-like…

  • allergy food

    Food Allergies

    A food allergy is an abnormal reaction by your immune system to a food. It is usually treated with antihistamines…

  • A young boy wearing a blue shirt holds leg in pain. Growing pains can make your child’s legs hurt and are common between the ages of 3 and 12. They are typically not serious.

    Growing Pains

    Growing pains can make your child’s legs hurt and are common between the ages of 3 and 12. They are…

  • A child scratches her head with a look of discomfort on her face. Head lice are small wingless insects that can get on your hair and scalp. Lice bites may cause scratching, skin irritation or infection.

    Head Lice

    Head lice are small wingless insects that can get on your hair and scalp. Lice bites may cause constant scratching,…

  • young Asian boy with hearing device in ear

    Hearing Problems in Children

    Hearing loss in children can be caused by a number of factors. Recognizing the symptoms early increases the chances of…

  • Doctor listens to young girl’s heartbeat

    Heart Murmurs

    A heart murmur is an abnormal noise between heartbeats. It can be a sign of a heart problem.

  • illustration of red blood cells in the bloodstream and Hemolytic uremic syndrome (HUS)

    Hemolytic Uremic Syndrome

    Hemolytic Uremic Syndrome is a condition that results from a digestive system infection.

  • hand holding a lubrication spray can

    Inhalant Use

    Inhalant use is a form of substance use disorder that involves breathing in or sniffing household products on purpose to…

  • Closeup of a mother helping her toddler walk in the grass

    Intoeing

    Most people’s feet point straight ahead or outward. Some people, however, have feet that point inward. This is called…

  • A baby cries in distress. Intussusception is a serious problem with the intestine that prevents the passage of food through the intestine. It is a medical emergency.

    Intussusception

    Description: Intussusception is a serious problem with the intestine that prevents the passage of food through the intestine.

  • Juvenile Rheumatoid Arthritis

    Juvenile rheumatoid arthritis can cause joint pain and swelling in children younger than 16. Its symptoms can be intermittent or…

  • A close-up photo of a young girl without hair. Leukemia is a cancer involving the body’s white blood cells and bone marrow. It is most common in adults over 60, but kids can also get it.

    Leukemia

    Leukemia is a blood cancer involving your body’s bone marrow.

  • A young girl receives the measles vaccine from a doctor. Measles is a very contagious respiratory illness that also causes a fever and a rash. It is preventable with a vaccine.

    Measles

    Measles (also called rubeola) is a serious respiratory illness. This means it affects the lungs and breathing tubes. It also…

  • Cotton swab with fluid sample for lab test to diagnose meningitis

    Meningitis

    Meningitis is swelling of the tissue around your brain and spinal cord. There are two common types of meningitis: viral…

  • doctor checking lymph nodes of a patient

    Mononucleosis

    Mononucleosis is a contagious illness caused by the Epstein-Barr virus. The virus can be found in saliva, mucus, and other…

  • Pediatrician exams a child's lymph nodes. Mumps is a virus that is spread like the common cold. Mumps symptoms can cause you to feel sick for two weeks.

    Mumps

    Learn about mumps and how it can be prevented.

  • Nightmares and Night Terrors

    Nightmares and night terrors can be scary parts of childhood, but they are usually triggered by everyday events and often…

  • A photo of a troubled teen meeting with his psychologist

    Oppositional Defiant Disorder

    Oppositional defiant disorder, or ODD, is a behavior condition that affects children and teens. Those who have it are angry,…

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