What are the age-related demographics of pediatric allergic rhinitis?

Updated: Jun 04, 2021
  • Author: Jack M Becker, MD; Chief Editor: Harumi Jyonouchi, MD  more...
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AR usually presents in early childhood. AR caused by sensitization to outdoor allergens can occur in children older than 2 years; however, sensitization in children older than 4-6 years is more common. Clinically significant sensitization to indoor allergens may occur in children younger than 2 years. This is typically associated with significant exposures to indoor allergens (eg, molds, furry animals, cockroaches, dust mites). Some children may be sensitized to outdoor allergens at this young age if they have significant exposure. Incidence continues to increase until the fourth decade of life, when symptoms begin to fade; however, individuals can develop symptoms at any age.

AR-like symptoms (runny nose, blocked nose, or sneezing apart from a cold) may begin as early as age 18 months. In a report from the Pollution and Asthma Risk: an Infant Study (PARIS), 9.1% of the 1859 toddlers in the study cohort reported allergic rhinitis-like symptoms at age 18 months. [6]

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