What is cockroach allergy?
Cockroaches leave behind allergen-carrying particles in their saliva, faeces and cast-off skin as they move through kitchens, drains and storage areas. These particles dry out, become airborne with any disturbance, and settle into dust throughout a home — meaning exposure continues long after a cockroach itself is gone.
Conditions it commonly triggers
Cockroach sensitisation is strongly linked to asthma and year-round allergic rhinitis, and is considered one of the most significant indoor asthma triggers in urban, densely-housed environments — alongside house dust mite.
Where exposure happens at home
- Kitchens — especially around stoves, sinks and food storage
- Drains, waste bins and damp corners
- Cracks and crevices in cupboards, skirting boards and old furniture
- Common in ground-floor flats and homes near open drains or waste areas
Reducing exposure at home
- Store food in sealed containers and clean food debris promptly
- Fix leaking taps and reduce standing water, which attracts cockroaches
- Seal cracks and gaps around pipes, skirting and cupboards
- Take out garbage regularly and keep bins covered
- Where infestation is present, professional pest control is usually needed — allergen levels can stay elevated for months even after roaches are gone, so cleaning dust and surfaces afterward matters too
Testing & treatment
Skin prick testing confirms true cockroach sensitisation. For children with confirmed, clinically significant cockroach allergy and asthma that remains hard to control despite good source control, this trigger should specifically be discussed as part of the overall treatment plan.
Talk to Dr. Narwani: If your child's symptoms are affecting sleep, school, play or growth, or you suspect a specific trigger, book a consultation for proper allergy work-up rather than guessing at home remedies.