Normally, the immune system would only react if a harmful substance, such as bacteria, attacks the body. For people with allergies, their immune systems are working too hard and react even when relatively harmless substances, such as pollen, are present.
FRIDAY, June 27, 2025 (HealthDay News) — Many kids are spending a lot of unnecessary time under observation in a hospital following a sudden allergic emergency, a new study concludes.
