What characterizes dermatitis artefacta?

Dermatitis artefacta is characterized primarily by self-inflicted skin lesions that can appear in distinct patterns, often geometric. Patients may create these lesions through various means, including scratching, rubbing, or applying substances to the skin, frequently without an underlying medical cause. The geometric patterns are crucial to the identification of dermatitis artefacta, as they often reveal the intentional nature of the injury.

This form of dermatitis indicates a complex interplay between psychological and physical health, where the skin manifestations are a representation of the underlying emotional distress or psychiatric condition. It is essential for healthcare providers to recognize these patterns, as they guide appropriate management, which may involve psychological support in addition to dermatological care.

The other options describe different skin conditions that do not relate to intentionally induced or self-inflicted patterns. A contact dermatitis involves an allergic reaction, insect bites lead to localized reactions, and medication reactions are typically associated with specific drugs rather than the self-directed nature seen in dermatitis artefacta.