“The first-generation antihistamines have more cognitive or brain-related effects than the second generation do, so it’s not wise to take that every day,” says Sai R. They belong to a class of drugs called anticholinergics whose long-term use may increase the risk of dementia. In addition to their allergy-fighting effects, “first-generation” antihistamines such as Benadryl can cause drowsiness and coordination problems. There are two main categories of antihistamines, says Eric Macy, an allergist-immunologist at Kaiser Permanente in San Diego. Histamine causes the blood vessels to expand and become leakier and mucus production to ramp up in order to fight the intruder, leading to a runny nose and other classic allergy symptoms. Unfortunately for allergy sufferers, the immune system sometimes overreacts to substances like pollen that aren’t actually harmful. These drugs work by blocking your body’s response to histamine, a chemical the immune system releases when it detects a potential threat. Many over-the-counter allergy medications are antihistamines. Allergy experts have a few tips to keep in mind while bracing for the start of allergy season. But, it’s important to know the differences among the many options to find out when and how long you should take them. But as anyone with allergies knows-you can suffer anywhere.įortunately, there are several kinds of allergy medications that can tame symptoms. Outside these regions, Scranton, Pennsylvania, made the list at No. This year, the Great Plains, Florida, and the Carolinas are expected to be the worst areas of the US for people with allergies, according to a report by the nonprofit Asthma and Allergy Foundation of America. Hay fever (also known as allergic rhinitis) affects 10 to 30 percent of the world’s population and can strike in any season due to dust mites and other common irritants. Other allergies can irritate us year-round. And with spring comes allergies.Īcross much of the US, the influx of pollen and mold spores that herald spring’s arrival also signal the return of sneezing, itchy eyes, runny noses, and more. Another round of snow and ice may have recently gripped large portions of the country, but spring is here.
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