Asthma in Children: A Parent's Complete Guide
Asthma is the most common chronic disease in children in the United States, affecting approximately 5.1 million children under the age of 18. In Florida, high humidity, year-round pollen, and cockroach allergen exposure in urban housing contribute to some of the highest childhood asthma rates in the Southeast. For parents, a diagnosis of childhood asthma can feel overwhelming — but with proper management, the great majority of children with asthma live completely normal, active lives, including competitive sport.
How Asthma Presents Differently in Children
Children's airways are smaller than adults', meaning even small amounts of inflammation cause proportionally greater airflow restriction. Very young children also cannot describe what they feel, making diagnosis a detective process for parents and doctors alike.
Infants and Toddlers (Under 3)
Diagnosing asthma before age 3 is difficult because wheezing is common in young children with any viral respiratory infection. Signs to watch for:
- Recurrent wheezing with or without cold symptoms
- Rapid breathing (tachypnea) during sleep
- Retractions — visible pulling of skin between the ribs when breathing
- Persistent cough lasting more than 3–4 weeks
- Poor feeding or interrupting feeds to catch breath
- Nostrils flaring during breathing
School-Age Children (6–12)
- Coughing at night or early morning that disrupts sleep
- Avoiding physical activity or being noticeably slower than peers
- Complaints of chest tightness before or during exercise
- Missing school frequently due to respiratory illness
- Taking longer than other children to recover from colds
Teenagers
Teens may downplay symptoms to fit in or avoid using an inhaler publicly. Watch for poor academic performance (from disrupted sleep), withdrawal from sports, and secretive rescue inhaler use. Teenagers are also at risk of stopping controller medication without telling parents or doctors.
Diagnosing Asthma in Children
In children old enough to cooperate (usually 5+), diagnosis involves:
- Spirometry: Measures lung function before and after a bronchodilator. A significant improvement after bronchodilator confirms reversible airway obstruction.
- FeNO test: Measures fractional exhaled nitric oxide, a marker of eosinophilic airway inflammation — elevated in allergic asthma.
- Allergy skin tests or blood tests: Identify specific allergen triggers.
- Methacholine challenge: Used when baseline spirometry is normal but asthma is suspected — tests airway hyperresponsiveness.
For children under 5, diagnosis is largely clinical — based on symptom pattern, family history and response to a trial of asthma medication.
Asthma Medications Safe for Children
Most asthma medications used in adults are approved for children, often at lower doses. A paediatric specialist will choose based on the child's age, severity and ability to use the device.
Inhalers and Spacers
Children under 6 should always use a metered-dose inhaler (MDI) with a valved holding chamber (spacer) and a face mask for the youngest children. Dry powder inhalers (DPIs) typically require a strong, fast inhalation that young children cannot reliably perform.
Nebulisers
For infants and very young children, or during severe attacks, a nebuliser converts liquid medication into a fine mist that can be inhaled passively. Home nebulisers are often prescribed for children with a history of severe exacerbations.
Managing Asthma at School
Florida law allows students with asthma to self-carry and self-administer their rescue inhaler at school (with appropriate documentation). Steps every parent should take:
- Provide a written Asthma Action Plan signed by the child's doctor to the school nurse before the school year starts
- Ensure a rescue inhaler is stored with the school nurse AND the child carries a personal inhaler (per Florida self-carry law)
- Identify and communicate known triggers to the teacher (pets brought to class, cleaning products, outdoor activities on high-pollen days)
- Inform the PE teacher — pre-exercise inhaler use may be needed
- Update all documentation at the start of each school year
Childhood Asthma and Exercise
Children with asthma should not avoid sport — in fact, many Olympic athletes have asthma. Exercise strengthens respiratory muscles and improves cardiovascular fitness. Swimming is often recommended because the warm, moist air of indoor pools is less likely to trigger symptoms than cold or dry air.
A pre-exercise dose of rescue inhaler (15–20 minutes before activity) prescribed by the doctor allows most children to participate fully in any sport.
Will My Child Outgrow Asthma?
About 50% of children with mild intermittent asthma experience significant improvement or apparent remission during adolescence as their airways grow. However, asthma often returns in adulthood, particularly in women and in those with allergic asthma. Children with severe asthma or significant lung function impairment are less likely to outgrow it. Regular follow-up is important even when symptoms improve.