Epidemiology: Allergic Rhinitis - Allergic rhinitis is highly prevalent yet significantly under-diagnosed

Introduction

By 2020, approximately 157 million adults and 31 million children will be living with allergic rhinitis across the markets covered in this report. While Datamonitor does not anticipate a marked increase in cases over the forecast period, there remains a large population who are not optimally treated due to low diagnosis rates. It is primarily the most severe cases captured in clinical settings.

Features and benefits

• Gain insight to market potential, including a robust 10-year epidemiology forecast of allergic prevalent cases.
• Understand the key epidemiologic risk factors associated with allergic rhinitis.

Highlights

Prevalence rates for allergic rhinitis in the seven major markets (the US, Japan, France, Germany, Italy, Spain, and the UK) range from 14% to 31%, but diagnosis rates for allergic rhinitis hover around only 30–40% for adults in the US and Europe.

Datamonitor estimates that there were approximately 150 million adult cases of allergic rhinitis in 2010. Nearly half of these prevalent adult cases are in the US.

The diagnosis rates in the US (31%) and the five major EU markets (France: 30%, Germany: 41%, Italy: 33%, Spain: 33%, the UK: 36%) are similar. It is interesting that Germany has the highest diagnosis rate as the prevalence rates in the country are among the lowest. This may indicate an increased awareness of allergic rhinitis in Germany.

Your key questions answered

• What are the most robust epidemiological studies for allergic rhinitis prevalence data?
• How will the patient population change over the next decade in the US, Japan, and five major EU markets (France, Germany, Italy, Spain, and the UK)?
• How do changes in population structure or risk factors affect the trend in prevalence allergic rhinitis cases?

Table Of Contents

OVERVIEW

Catalyst
Summary

EXECUTIVE SUMMARY

Diagnosis and trends in allergic rhinitis
Epidemiologic forecast results

DISEASE DEFINITION AND DIAGNOSIS CRITERIA

Definition of allergic rhinitis remains vague
Defining allergic rhinitis for epidemiologic studies
Allergic rhinitis often goes undiagnosed

GLOBAL VARIATION AND HISTORICAL TRENDS

Global variation
Historical trends

DRIVERS OF ALLERGIC RHINITIS EPIDEMIOLOGY

Asthma
Parental atopy
Global warming/seasonality

EPIDEMIOLOGIC FORECASTING OF ALLERGIC RHINITIS

Overview
Subpopulations
Pediatric and adult cases
Diagnosed cases
Seasonality
Allergens
US
Sources used
Methods
Sources not used
Japan
Sources used
Methods
Sources not used
France
Sources used
Methods
Sources not used
Germany
Sources used
Methods
Sources not used
Italy
Sources used
Methods
Sources not used
Spain
Sources used
Methods
Sources not used
UK
Sources used
Methods
Sources not used

EPIDEMIOLOGIC RESULTS

Total prevalent cases of allergic rhinitis
Current prevalent cases
Age-standardized results
Subpopulations
Diagnosed cases
Seasonality
Allergens

DISCUSSION

Strength of Datamonitor's epidemiologic sources

BIBLIOGRAPHY

Journal papers
Websites

APPENDIX

Module methodology

LIST OF TABLES

Table: ICD-10 codes for allergic rhinitis
Table: Sources of allergic rhinitis prevalence data used in this analysis
Table: Prevalent cases of allergic rhinitis in those aged 20 years or greater in the seven major markets (000s), 2010–20
Table: Prevalent cases of allergic rhinitis in those aged 20 years or greater in the seven major markets (excluding Japan), by age group (000s), 2010
Table: Prevalent cases of allergic rhinitis in those aged 19 years or younger in the seven major markets (000s), 2010–20
Table: Prevalent cases of allergic rhinitis in those aged 19 years or younger in the seven major markets, by age group (000s), 2010
Table: Diagnosed and undiagnosed adult and pediatric prevalent cases of allergic rhinitis (000s), 2010
Table: Distribution of ARIA severity classification among adult and pediatric diagnosed prevalent cases of allergic rhinitis, 2011
Table: Seasonality of adult and pediatric prevalent cases of allergic rhinitis, 2010
Table: Sensitization to key allergens among adult and pediatric prevalent cases of allergic rhinitis, 2010

LIST OF FIGURES

Figure: Prevalent cases of allergic rhinitis in the seven major markets in those aged 20 years or greater, 2010–20
Figure: Prevalent cases of allergic rhinitis in the seven major markets in those aged 19 years or younger, 2010–20
Figure: Age-standardized prevalence rates of allergic rhinitis in the seven major markets, 2010
Figure: Diagnosed and undiagnosed prevalent cases of allergic rhinitis in all ages, 2010
Figure: Proportional distribution of ARIA severity classification among diagnosed prevalent cases of allergic rhinitis in all ages, 2010
Figure: Distribution of seasonality among prevalent cases of allergic rhinitis, 2010
Figure: Prevalence of sensitiza