How is 'dermatitis' defined in skincare?

Dermatitis is defined as inflammation of the skin, which can manifest through symptoms such as redness, swelling, itchiness, and irritation. The condition can arise from various causes, including allergic reactions, irritants, and other environmental factors. It is characterized by the skin’s response to these irritants or allergens, often resulting in a visible inflammatory reaction. Understanding this definition is crucial for estheticians, as it helps in identifying skin conditions and determining the right treatments and products to use to soothe the skin and alleviate symptoms.

Other definitions, such as those involving skin aging, bacterial infections, or excessive dryness, do not capture the essence of dermatitis, as they pertain to different skin conditions or dermatological issues.