Seasonal allergies impact millions as research reveals allergen memory

Fall allergy season is currently underway, with medical experts noting that fluctuating weather conditions, including changes in temperature, barometric pressure, and wind, may aggravate symptoms for those with allergies and asthma. In addition to weather, agricultural activities such as plowing and fertilizing can contribute to increased airborne irritants.

To manage symptoms like sneezing, coughing, and itchy eyes, doctors recommend over-the-counter antihistamines and nasal sprays. Experts also suggest limiting outdoor time on dry, windy days, using HEPA air filters, and showering after being outside to remove pollen particles.

Concurrently, new research from the Mass General Brigham Health Care System suggests a biological basis for why allergies persist and worsen. Scientists found that nerve cells can develop a ‘memory’ of allergens, such as pollen, molds, or dust mites. This cellular memory allows the body to respond more strongly to subsequent exposures, even if the molecular structure of the allergen differs slightly. Researchers believe this discovery could lead to new methods for preventing the development of sensitivities.