What are the two main types of contact reactions categorized under contact dermatitis?
Answer
Irritant and allergic reactions
Contact dermatitis, which is frequently responsible for rapid onset rashes due to physical contact, is divided into two primary categories: irritant and allergic. Irritant contact dermatitis occurs when a substance directly inflicts damage upon the skin barrier, similar to a burn from a harsh chemical. Conversely, an allergic reaction involves the immune system responding to a specific allergen, like nickel or poison ivy, often resulting in a delayed response compared to immediate chemical damage.
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