What is the primary cause of contact dermatitis?

• A. Excessive moisture
• B. Sensitivity to sunlight
• C. Contact with irritants or allergens
• D. Genetic predisposition

Answer: (C)

Contact dermatitis primarily results from contact with irritants or allergens. This skin condition occurs when the skin reacts to a substance that either causes irritation directly or triggers an allergic response. Common irritants can include soaps, detergents, or chemicals, while allergens might be substances like poison ivy, certain metals, or fragrance components.

When the skin is exposed to these irritants or allergens, it can lead to symptoms such as redness, itching, swelling, and blistering. The immune system's reaction to these substances causes inflammation, which is the hallmark of contact dermatitis. Understanding the role of irritants and allergens is crucial in preventing and managing the condition, as avoiding known triggers is often the most effective strategy for those affected.