Lichenoid Dermatitis

Abstract

Lichenoid dermatitis is characterized by a band like inflammatory infiltrate in the superficial dermis parallel to the epidermis. In some cases the infiltrate abutts and obscures the dermal epidermal junction.

These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Lichenoid dermatitis is characterized by a band like inflammatory infiltrate in the superficial dermis parallel to the epidermis. In some cases the infiltrate abutts and obscures the dermal epidermal junction.

Table 15.1 Differential diagnosis of lichenoid dermatitis

Fig. 15.1

Lichenoid dermatitis. There is wedge-shaped hypergranulosis with irregular epidermal hyperplasia and a band of inflammation along the epidermal base

Fig. 15.2

Colloid bodies in lichen planus. The eosinophilic globules are extracellular and may be present in the epidermis or the superficial dermis, also known as Civatte bodies

Fig. 15.3

Lichen sclerosus. There is eosinophilic homogenization of the subepidermal dermis with an underlying band of inflammation

Fig. 15.4

Fixed drug reaction. There is extensive epidermal dyskeratosis and interface dermatitis that may have a dense lichenoid appearance