Can Rodent Infestations Worsen Asthma Symptoms?

Yes, rodent infestations can significantly worsen asthma symptoms. Rodents like mice and rats shed hair, dander, urine, saliva, and droppings—all of which can become airborne and act as powerful allergens. When inhaled, these particles can irritate the respiratory system, especially in individuals with asthma or other underlying conditions.

Rodent droppings and urine can also trigger inflammation in the airways, leading to more frequent and severe asthma attacks. In some cases, exposure may even cause asthma to develop in previously healthy individuals, particularly children. The presence of rodent allergens in the home is especially problematic in poorly ventilated areas like basements, attics, or behind walls where rodents commonly nest.

Moreover, rodent infestations often attract other pests like cockroaches or fleas, which are additional asthma triggers. Professional pest control is essential to eliminate the source, clean affected areas thoroughly, and improve indoor air quality—key steps in protecting asthma sufferers from preventable flare-ups.