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    A B C D E F G H I J K L M N O P Q R S T U V W X Y Z Back to Intro
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    Croup in Children

    What is croup in children?

    Croup is a common infection in children. It causes swelling in the upper part of the airway in the neck. It causes a barking cough, with or without fever. And it may cause problems with breathing. The illness is seen more often in the winter.

    What causes croup in a child?

    A virus is the most common cause of croup. But the illness may also be caused by bacteria, allergies, or reflux from the stomach. Viruses that are known to cause croup are:

    • Parainfluenza virus

    • Respiratory syncytial virus (RSV)

    • The flu (influenza virus)

    • Adenovirus

    • Enteroviruses

    • COVID-19

    Croup is spread through direct contact with an infected person or their body fluids. The infection starts in the nose and throat and moves into the lungs. Swelling affects the area around the voice box (larynx) and into the windpipe (trachea).

    Which children are at risk for croup?

    Younger children are more affected by croup because their airways are smaller. A small amount of swelling can make it very hard for a baby or young child to breathe. Croup is most often seen in children 3 months to 5 years old. The peak time for croup to occur is 2 years old.

    What are the symptoms of croup in a child?

    The symptoms of croup are not always the same. As the illness moves from the nose to the lungs, the symptoms can change. They may include:

    • A runny or stuffy nose and slight cough

    • A cough that turns into a “seal’s bark”

    • Losing their voice (laryngitis) or having a hoarse cry

    • Fever

    • A high-pitched “creaking” or whistling sound when breathing in (stridor)

    These symptoms are often worse at night and may wake your child from sleep. They may also seem to get better in the morning but get worse as the day goes on. Most children feel better in 3 to 7 days.

    The symptoms of croup can be mistaken for other health problems. Make sure your child sees their healthcare provider for a diagnosis.

    How is croup diagnosed in a child?

    Your child’s healthcare provider can diagnose croup with a health history and physical exam. Your child may need tests if the provider thinks they may have other illnesses. A neck X-ray, chest X-ray, or both may be ordered.

    How is croup treated in a child?

    Treatment will depend on your child’s symptoms, age, and general health. It will also depend on how severe the condition is.

    In severe cases of croup, or if your child is not breathing well, your child may need to go to the hospital. You can manage most milder cases at home. But it can sometimes be hard to tell if your child needs to go to the hospital because the illness changes. Your child may seem better one moment and then get worse the next. Your child’s healthcare provider may order the following medicines to help ease symptoms:

    • Inhaled medicines. These are used if your child is having a lot of trouble breathing. Inhaled treatments may be used to ease the whistling sound (stridor) and make it easier to breathe.

    • Steroids. An injectable steroid is often given if the child can’t take steroids by mouth (oral). This medicine can help prevent the illness from getting worse.

    • Other medicines. Your child's healthcare provider may prescribe other medicines if they feel your child’s croup is from allergies or reflux. The provider may also recommend acetaminophen or ibuprofen for a fever or discomfort. Antibiotics are not useful if the illness is caused by a virus.

    For a milder case, these methods may help at home:

    • Have your child rest and drink plenty of fluids.

    • Don’t smoke in the home. Smoke can make your child’s cough worse.

    • Keep your child’s head raised. Prop an older child up in bed with extra pillows. Never use pillows with babies younger than 12 months.

    • Sleep in the same room as your child to help your child right away if they start to have trouble breathing.

    • Stay calm. If your child sees that you are frightened, it will increase their anxiety and trouble breathing.

    • Comfort your child. Sing your child’s favorite bedtime song or offer a favorite toy.

    Breathing in steam or cool night air may also help your child breathe easier. You may want to try:

    • Putting a humidifier in your child’s room

    • Putting a warm, wet washcloth over your child’s nose and mouth as they breathe

    • Creating a steam room in your bathroom. Turn on the hot water in your bathroom shower. Keep the door closed so the room gets steamy. Sit with your child in the steam for 15 to 20 minutes. Don't leave your child alone.

    • If your child wakes up at night, try bundling them up and going outside to breathe in the cool night air.

    What can I do to prevent croup in my child?

    Here are tips to prevent the spread of croup:

    • Wash your hands often. Teach your child how to correctly wash their hands.

    • Stop your child from sharing cups and other dishware.

    • Keep your child at home until they are better.

    When should I call my child’s healthcare provider?

    Call 911 right away if your child:

    • Makes a whistling sound (stridor) that becomes louder with each breath

    • Has stridor when resting

    • Has a hard time swallowing their saliva, or drools

    • Has increased trouble breathing

    • Has a blue or dusky color around the fingernails, mouth, or nose

    • Struggles to catch their breath

    • Can't speak or make sounds

    Call your child's healthcare provider right away if your child:

    • Has a fever (see Fever and children, below)

    • Has a cough or other symptoms that don't get better or that get worse

    • Doesn't get better within a week

    • Has a fever that goes down but they still “act sick”

    • Has a seizure

    Fever and children

    Use a digital thermometer to check your child’s temperature. Don’t use a mercury thermometer. There are different kinds and uses of digital thermometers. They include:

    • Rectal. For children younger than 3 years, a rectal temperature is the most accurate.

    • Forehead (temporal). This works for children age 3 months and older. If a child under 3 months old has signs of illness, this can be used for a first pass. The provider may want to confirm with a rectal temperature.

    • Ear (tympanic). Ear temperatures are accurate after 6 months of age, but not before.

    • Armpit (axillary). This is the least reliable but may be used for a first pass to check a child of any age with signs of illness. The provider may want to confirm with a rectal temperature.

    • Mouth (oral). Don’t use a thermometer in your child’s mouth until they are at least 4 years old.

    Use a rectal thermometer with care. Follow the product maker’s directions for correct use. Insert it gently. Label it and make sure it’s not used in the mouth. It may pass on germs from the stool. If you don’t feel OK using a rectal thermometer, ask the healthcare provider what type to use instead. When you talk with any healthcare provider about your child’s fever, tell them which type you used.

    Below is when to call the healthcare provider if your child has a fever. Your child’s healthcare provider may give you different numbers. Follow their instructions.

    When to call a healthcare provider about your child’s fever

    For a baby under 3 months old:

    • First, ask your child’s healthcare provider how you should take the temperature.

    • Rectal or forehead: 100.4°F (38°C) or higher

    • Armpit: 99°F (37.2°C) or higher

    • A fever of ___________as advised by the provider

    For a child age 3 months to 36 months (3 years):

    • Rectal or forehead: 102°F (38.9°C) or higher

    • Ear (only for use over age 6 months): 102°F (38.9°C) or higher

    • A fever of ___________ as advised by the provider

    In these cases:

    • Armpit temperature of 103°F (39.4°C) or higher in a child of any age

    • Temperature of 104°F (40°C) or higher in a child of any age

    • A fever of ___________ as advised by the provider

    Key points about croup in children

    • Croup is a common infection in children. It is most often caused by a virus. It causes swelling in the upper part of the airway in the neck.

    • Children with croup have trouble breathing because their small airways swell.

    • Common symptoms include a barking cough, fever, runny nose, and high-pitched “creaking” or whistling sound (stridor) when breathing in.

    • Most cases are mild and can be managed at home. A child who has a lot of breathing problems may need to go to the hospital.

    • Correct handwashing is one way to prevent croup.

    Next steps

    Tips to help you get the most from a visit to your child’s healthcare provider:

    • Know the reason for the visit and what you want to happen.

    • Before your visit, write down questions you want answered.

    • At the visit, write down the name of a new diagnosis and any new medicines, treatments, or tests. Also write down any new instructions your provider gives you for your child.

    • Know why a new medicine or treatment is prescribed and how it will help your child. Also know what the side effects are.

    • Ask if your child’s condition can be treated in other ways.

    • Know why a test or procedure is recommended and what the results could mean.

    • Know what to expect if your child does not take the medicine or have the test or procedure.

    • If your child has a follow-up appointment, write down the date, time, and purpose for that visit.

    • Know how you can contact your child’s healthcare provider after office hours. This is important if your child becomes ill and you have questions or need advice.

    Online Medical Reviewer: Dan Brennan MD
    Online Medical Reviewer: Jessica Gotwals RN BSN MPH
    Online Medical Reviewer: Liora C Adler MD
    Date Last Reviewed: 6/1/2023
    © 2000-2024 The StayWell Company, LLC. All rights reserved. This information is not intended as a substitute for professional medical care. Always follow your healthcare professional's instructions.
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    Southern New Mexico
    Surgery Center

    2301 Indian Wells Rd. Suite B
    Alamogordo, NM 88310
    www.snmsc.org

    Phone: 575.437.0890
    Fax: 575.437.0905
    Email: info@snmsc.org

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