histamine
A substance released from certain cells in response to allergens, associated with the development of allergic symptoms, including itchy eyes, sneezing and congestion.
Last Updated
October 7, 2025
October 7, 2025
Last updated: October 7, 2025.
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Pregnancy and RSV
Respiratory synctial virus (RSV) is a common condition that affects a person’s respiratory system. In most cases, RSV causes mild, cold-like symptoms. However, infants and older adults are at highe...