### What is Allergic Contact Dermatitis? Allergic contact dermatitis happens when your skin overreacts to something it touches. This overreaction causes a red, itchy rash. Your immune system thinks the substance is harmful and sends antibodies to fight it off. ### Types of Contact Dermatitis There are two main types: 1. **Allergic Contact Dermatitis**: This occurs when people with allergies react to substances that don't bother most others. Common allergens include plants like poison ivy, dyes, and fragrances. 2. **Airborne Contact Dermatitis**: This happens when allergens in the air, like pollen or chemical sprays, settle on your skin. It usually affects the eyelids, head, and neck. ### Symptoms and Diagnosis Symptoms include red, itchy rashes, hives, and swelling. To diagnose, doctors often use the T.R.U.E. test, which involves sticking panels with possible allergens to your back. You wear them for two days, and the doctor checks for reactions. If needed, further patch testing or the R.O.A.T. test may be done. ### Treatment and Prevention The best way to manage allergic contact dermatitis is to avoid the allergens. If you can't, over-the-counter products and home remedies can help relieve symptoms. Don't scratch the rash to prevent infection. In rare cases, severe reactions like anaphylaxis can occur, requiring immediate medical attention. ### Conclusion Allergic contact dermatitis can be managed by identifying and avoiding allergens. While most cases are not life-threatening, it's important to treat symptoms and seek medical help if severe reactions occur.