https://www.healthline.com/health/allergies
Allergies Overview: Symptoms, Treatments, and More
Jul 7, 2025 - An allergy is an immune system response to a foreign substance that’s not typically harmful to your body. Learn more about the types, causes, and symptoms of...
allergies overviewsymptoms
https://www.verywellhealth.com/allergies-overview-4581761
Allergies: Overview and More
Allergies happen when your immune system overreacts. Symptoms can range from annoying to severe. Reviewed by a board-certified allergist.
allergies overview