Seasonal allergies are more than just a nuisance—they can lead to persistent sneezing, itchy eyes, a runny nose, and a cough ...

When the sun is out and the grass pollen count is high, many of us reach for an antihistamine to avoid the streaming eyes and ...

In NYC, spring kicks off tree pollen season, followed by grass pollen in the summer and weed pollen in the late summer and ...

Xyzal (levocetirizine) and Zyrtec (cetirizine) are over-the-counter (OTC) allergy medications. Learn about their key ...

Discover 8 ways mast cell activation syndrome causes widespread symptoms from digestive issues to brain fog, often mistaken ...

Histamine is a naturally occurring chemical that plays an important role in immune responses, digestion, and the nervous system. Produced by mast cells in your body, histamine helps fight ...

Saline nasal sprays can also be used to flush out allergens and restore the natural moisture of the nasal lining. Steroid ...

Handling histamine intolerance can be difficult, especially if you enjoy eating foods high in histamine. Side effects like headaches, hives, and gastrointestinal problems can quickly spoil your day.

Dr Adam Friedman recounts how AAD 2025 highlighted advancements in chronic spontaneous urticaria management, with discussion ...

A paper published today (November 24) in Cancer Cell reports that high levels of histamine—best known for being released in response to allergens—and one of its receptors are associated with tumor ...

1907— Adolf Windaus and his associate W. Vogt produce histamine synthetically by removing the carboxyl group from the amino acid histidine. 1910—Henry Dale and his colleagues at the Wellcome ...