ANATOMY

Detailed explanation-1: -When a harmless substance such as dust, mold, or pollen is encountered by a person who is allergic to that substance, the immune system may over react by producing antibodies that “attack” the allergen. The can cause wheezing, itching, runny nose, watery or itchy eyes, and other symptoms.

Detailed explanation-2: -Anaphylaxis is a severe, potentially life-threatening allergic reaction. It can occur within seconds or minutes of exposure to something you’re allergic to, such as peanuts or bee stings.

Detailed explanation-3: -This leads to an allergic reaction-an immune system response in which chemicals like histamine are released in the body. The reaction can cause symptoms like hives, vomiting, belly pain, throat tightness, hoarseness, coughing, breathing problems, or a drop in blood pressure.

Detailed explanation-4: -An allergy is when your immune system reacts to something that is harmless to most people. Substances that cause allergies are called ‘allergens’. Common allergies include: food allergies (including fish and shellfish, nuts, eggs, wheat, dairy, soy)