What Is Pseudoepitheliomatous Hyperplasia?

Pseudoepitheliomatous hyperplasia (PEH) is a reactive epithelial proliferation seen in response to wide variety of conditions including infections, neoplasia, inflammation and trauma. It is characterized by hyperplasia of epidermis and adnexal epithelium and it closely mimics squamous cell carcinoma (SCC).

What causes Pseudoepitheliomatous hyperplasia?

Pseudoepitheliomatous hyperplasia (PEH) is an uncommon type of reactive epidermal proliferation that can occur from a variety of causes, including an underlying infection, inflammation, neoplastic condition, or trauma induced from tattooing.

How is Pseudoepitheliomatous hyperplasia treated?

Topical photodynamic therapy (PDT) offers an effective and non-invasive treatment with good cosmetic outcome for intraepithelial neoplasia and inflammatory dermatosis, such as psoriasis and viral warts.