Final answer:
Allergic contact dermatitis is a skin reaction caused by the immune system reacting to a substance that comes into contact with the skin. Common causes include exposure to latex, poison ivy, and certain medications. Symptoms can vary depending on the type of exposure and the severity of the immune response.
Step-by-step explanation:
Allergic contact dermatitis is a type of skin reaction that occurs when the immune system reacts to a substance that comes into contact with the skin. Common causes of allergic contact dermatitis include exposure to substances such as latex, poison ivy, and certain medications like penicillin. For example, inhaling ragweed pollen can cause symptoms of allergic rhinitis, while skin contact with oils in poison ivy can cause an itchy rash called contact dermatitis.