Croup

  • Medical Author:
    John Mersch, MD, FAAP

    Dr. Mersch received his Bachelor of Arts degree from the University of California, San Diego, and prior to entering the University Of Southern California School Of Medicine, was a graduate student (attaining PhD candidate status) in Experimental Pathology at USC. He attended internship and residency at Children's Hospital Los Angeles.

  • Medical Editor: William C. Shiel Jr., MD, FACP, FACR
    William C. Shiel Jr., MD, FACP, FACR

    William C. Shiel Jr., MD, FACP, FACR

    Dr. Shiel received a Bachelor of Science degree with honors from the University of Notre Dame. There he was involved in research in radiation biology and received the Huisking Scholarship. After graduating from St. Louis University School of Medicine, he completed his Internal Medicine residency and Rheumatology fellowship at the University of California, Irvine. He is board-certified in Internal Medicine and Rheumatology.

Quick GuideChildhood Diseases: Measles, Mumps, & More

Childhood Diseases: Measles, Mumps, & More

What is croup? What causes croup?

Croup is an infectious pediatric illness of the respiratory system that involves predominantly the vocal cords (larynx) and windpipe (trachea), and to a lesser degree the upper airways of the lungs (bronchial tubes). The majority of a child's symptoms reflect involvement of the larynx. Croup is usually a viral infection and may be caused by many different viruses, including those responsible for the common cold and influenza. Rarely, it is caused by a bacterial infection. Croup is more common and concerning in children between 6 months and 3 years of age and rarely occurs in children over 6 years of age. It is more commonly seen from late fall through the early winter months. It has a slightly higher frequency in boys than in girls. Bacterial croup is an infection of the same structures that are affected during a viral process. Treatment varies depending on whether the child's illness is caused by a virus or a bacteria.

Reviewed on 12/14/2015
References
REFERENCES:

Malhotra, A., and L.R. Krilor. "Viral Croup." Pediatrics in Review 22.1 Jan. 2001: 5-12.

United States. Centers for Disease Control and Prevention. "Human Parainfluenza Viruses (HPIVs)." Aug. 18, 2015. <http://www.cdc.gov/parainfluenza/index.html>.

Woods, Charles R. "Patient Information: Croup in Infants and Children." UptoDate.com. Aug. 18, 2010. <http://www.uptodate.com/patients/content/topic.do?topicKey=~IJIXh1W5371lMy>. IMAGES:

1.iStock

2.iStock

3.iStock

4.MedicineNet

5.BigStock

6.iStock

7.iStock

8.iStock

9.BigStock

Subscribe to MedicineNet's Children's Health & Parenting Newsletter

By clicking Submit, I agree to the MedicineNet's Terms & Conditions & Privacy Policy and understand that I may opt out of MedicineNet's subscriptions at any time.

Health Solutions From Our Sponsors