Fact Sheet: Childhood Asthma
Asthma is a chronic inflammatory disease characterized by airway obstruction, inflammation, and hyper-responsiveness, yielding variable and recurring symptoms such as wheezing, shortness of breath, coughing, and chest tightness. Genetics, early childhood exposures (e.g., infections), and environmental variables (e.g., airborne allergens, pollution, mold in homes, substandard housing) are believed to be etiological factors in childhood asthma. Adherence rates to medication varies greatly. One study reports adherence rates as low as 33.8% and rates as high as 85.5%, depending on whether the child had uncontrolled or controlled asthma, respectively. Low adherence rates are problematic because they are associated with more severe symptoms. Non-adherence can be intentional (e.g. voluntarily forgoing medications) or unintentional (e.g. forgetting). Many factors contribute to low adherence rates in children and adolescents including child behaviors, beliefs about the usefulness of medication, and cost.
Prevalence and Course
Over 8% of children in the United States have asthma, making it the most common chronic childhood disease. Although prevalence is higher in males under the age of 5, prevalence does not significantly differ in school-aged children and adolescents until adulthood, at which point prevalence is higher in females. The course and treatment of asthma varies with disease severity (intermittent versus persistent) and level of control of current asthma symptoms. Persistent asthma can be further categorized as mild, moderate, or severe. Generally, youth with persistent asthma are more likely to experience asthma attacks, and benefit from long-term, daily maintenance medications (e.g., inhaled corticosteroids). Those with asthma may also prevent exacerbations by avoiding environmental triggers. Although there is no cure, remission of asthma symptoms is possible and is more likely among people with less severe asthma, better forced expiratory volume, and fewer allergies or atopic conditions.
Health and Psychosocial Consequences
When asthma is not well-managed, it is associated with negative health consequences (e.g., decreased lung functioning, frequent hospitalizations), as well as problems in daily functioning (e.g., school absences and lack of participation in extracurricular activities). Children with severe asthma seem at higher risk for internalizing and externalizing concerns than children without asthma. Some of these mental health difficulties include anxiety, depression, and attention difficulties. Caregivers of children with asthma have also been shown to experience psychosocial difficulties. For example, they may display higher levels of anxiety and depression than caregivers of children without asthma, which in turn may interfere with how well the caregiver can control the child’s asthma symptoms.
Many factors, including parental health literacy and behavioral adjustment in young children, are important to assess due to their potential influence on asthma control and medication use. While several health literacy assessments exist (e.g. Test for Functional Health Literacy in Adults, Rapid Estimates of Adult Literacy, Asthma Numeracy Questionnaire), these measures do not adequately measure all components of health literacy or all components of asthma-specific health literacy. Barriers to adherence are also important to evaluate, including financial limitations, familial problems, access to healthcare, and poor communication with healthcare providers. When working with adolescents, perceptions of treatment and social support should be considered. Adolescents with inconsistent asthma symptoms often fail to recognize the necessity of taking their medications, while, others dislike medication side-effects, which can impair adherence. Additionally, assessing compliance to Asthma Action Plans (plans of treatment) provides another indicator of asthma management. Of note, self-reported adherence ratings are subject to bias; objective measures (e.g., pharmacy refill data, electronic monitoring) have better evidence for monitoring medication adherence without social desirability effects.
Culture, Diversity, Demographic and Developmental Factors
Adherence to asthma medications is lower among adolescents and ethnic minorities, especially those with low health literacy. Emergency room visits also tend to be higher for youth who identify as African American. Children of Puerto Rican descent and children with obesity may also be at risk for more frequent emergency room visits or more severe asthma outcomes, respectively. The highest childhood prevalence rates are found among children from socioeconomically disadvantaged backgrounds and children who identify as non-Hispanic black race and ethnicity. However, the prevalence of asthma in non-Hispanic black youth has stopped increasing.
Interventions often target patient and family education, adherence, asthma management, and healthcare providers. Research indicates that children’s breathing and school attendance improve when they go through an educational intervention. Interventions with behavioral and educational components may increase adherence rates to inhaled corticosteroids. Notably, a review focusing on children with severe asthma indicates educational interventions are most effective when paired with psychosocial or other interventions. Some commonalities found in several effective interventions include individualization to the child and involvement of the family or school. Because stress plays a role in asthma exacerbations, psychoeducation programs that teach children ways to reduce stress may improve lung functioning and psychological well-being. Technology (e.g., websites, text messages, and applications) provides another means to educate and reach youth and families. For instance, a computer-based asthma education program for children with asthma and their families has been found to increase parental disease knowledge. Additionally, digital technologies may improve disease management and adherence in youth with asthma. Furthermore, there is a growing focus on developing mobile health (mHealth) tools to assist youth in improving their asthma management and medication adherence.
- Centers for Disease Control and Prevention (2018). Asthma in children
- Centers for Disease Control and Prevention (2019a). Data, statistics, and surveillance
- Centers for Disease Control and Prevention (2019b). Kids
Authors: Jennifer Kelleher, B.S., & Christina Duncan, Ph.D.
Date of last update: January, 2020
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