allergic responses

Allergic responses occur when the immune system mistakenly identifies a harmless substance, like pollen or pet dander, as a threat. This triggers the release of chemicals such as histamine, which cause symptoms like sneezing, runny nose, itching, and swelling. In some cases, allergic reactions can be more severe, leading to difficulty breathing or anaphylaxis. These responses are the immune system's way of defending against perceived dangers, but in allergies, this defense is misdirected. Managing allergies involves avoiding triggers and, in some cases, using medications to reduce symptoms and prevent serious reactions.