An allergy is a condition caused by the immune system’s hypersensitivity to certain substances in the environment. These substances are generally harmless for most people.
Some of the most common allergens are:
The following are some of the types of allergies:
Different allergies have different symptoms. Some of the symptoms of the most common allergies are:
Some of the diagnostic tests for allergic reactions are:
Anaphylaxis is a severe and fatal allergic reaction. It occurs within seconds or minutes of being exposed to an allergen. Anaphylaxis triggers a release of chemicals from the immune system that cause a person to go into shock; there is a sudden drop in blood pressure and breathing gets blocked because the airways narrow down. Signs and symptoms include a fast, weak pulse, rashes, and nausea and vomiting. Common triggers are latex, certain foods, medication, and insect venom. Anaphylaxis can be treated with an injection of epinephrine and monitoring the health in the emergency room. If anaphylaxis isn't treated right away, it can be life-threatening.