Detailed answer

Allergies can trigger an immune response in the body, leading to inflammation and increased blood flow to the affected area. This can result in redness and sensitivity of the skin. Allergic reactions can be triggered by various substances such as pollen, certain foods, or skin care products. It is important to identify and avoid the allergen causing the reaction to alleviate redness and sensitivity. Consulting with a healthcare professional or allergist can help in diagnosing the specific allergen and developing an appropriate treatment plan.