Cockroach and other inhalant allergies in infantile asthma

Area of Science:

• Pediatric Allergy and Immunology
• Environmental Health
• Respiratory Medicine

Background:

• Infantile asthma is often attributed to viral infections and secondhand smoke.
• Allergy's role in early childhood asthma is frequently underestimated.
• Skin testing is not routinely performed on infants and young children.

Purpose of the Study:

• To determine the prevalence of skin test reactivity in asthmatic children under three years old.
• To investigate the frequency of allergic sensitization in infants and toddlers diagnosed with asthma.

Main Methods:

• 196 children (under 3 years) diagnosed with infantile asthma were evaluated.
• Environmental histories were collected, and skin prick tests were administered.
• Allergens tested included alternaria, cat, dog, cockroach, and house dust mites (HDM).

Main Results:

• 45% of participants showed positive skin test reactions to at least one allergen.
• Cockroach allergy was most common (26%), followed by house dust mites (17.3%) and cat allergy (13.8%).
• In infants under one year, cockroach allergy was also prevalent (28.5%).

Conclusions:

• Allergies to indoor allergens, particularly cockroaches, may significantly contribute to infantile asthma.
• Skin testing in young asthmatic children can yield valuable data.
• Findings support implementing environmental control measures in homes to manage childhood asthma.