What Is an Allergic Reaction?
An allergic reaction occurs when the immune system reacts abnormally to harmless substances, such as mold, dust mites, pet dander, or pollens. During this process, the body releases chemicals like leukotrienes and histamine. This would affect different parts of the body, such as the digestive tract, respiratory system, and the skin. In most cases, symptoms tend to be harmless and resolve quickly. However, allergies would result in life-threatening problems, especially anaphylaxis. Common forms of allergic reactions include atopic dermatitis, food allergies, asthma, and hay fever. These are common health issues that make people visit healthcare providers.