Most people can't wait for spring. With the warm weather, plants wake up and pollen is produced. Presto! Seasonal allergies. Allergies are the immune system run amok. A harmless substance like pollen is seen as a threat and the immune system springs into action, overreaction. Anyone who has experienced this knows that for a lot of people, the symptoms are an annoyance, interfering with sleep, breathing and causing general discomfort. To help alleviate the effects, antihistamines are available.
The allergen itself (usually pollen) triggers the allergic reaction. Histamines are released and they are the chemical messengers that stimulate other cells to cause the symptoms. Antihistamines act to interfere with the actions of histamines. First generation antihistamines are those like Benadryl which block the release of histamines. They are quite effective but cause drowsiness. If you have a job where you need to be alert (and what job can you do where you can nod off?), the first generation antihistamine isn't a good choice. The second generation drugs allows the histamine to be released but they block the receptor sites on the histamine's target cells. Their advantage is that they don't make you sleepy. A combination of the drugs works well for some people.
You can develop allergies at any time. I am mildly allergic to something in the air right now. My nose drips and I sneeze. There is a run on tissues in the house but I don't need antihistamines. If you suffer from the seasonal allergies, antihistamines work.
I've been writing on and off for years and this is where my more serious pieces will be.