Which type of dermatitis is commonly triggered by an allergic reaction?

Contact dermatitis is the type of dermatitis commonly triggered by an allergic reaction. This condition occurs when the skin comes into direct contact with a substance that causes an allergic response. Common allergens include certain metals, fragrances, and toxins found in various products like cosmetics or cleaning agents.

When the skin is exposed to these irritants or allergens, the immune system responds by becoming inflamed, resulting in symptoms such as redness, itching, and swelling. This specific response characterizes contact dermatitis, differentiating it from other types of dermatitis, which may have different triggers or underlying causes.

Atopic dermatitis, while also an allergic condition, is primarily associated with a hereditary predisposition and often involves chronic skin issues rather than a direct reaction to specific allergens. Seborrheic dermatitis relates more to oil production and the presence of yeast, while stasis dermatitis is associated with poor circulation and fluid retention. Each of these types has distinct characteristics and causes, with contact dermatitis being specifically notable for its reaction to external substances.