New and emerging therapies for lichenoid dermatoses.

Lichenoid dermatoses comprise a significant proportion of dermatologic conditions. The pathophysiologic mechanisms are unclear for many such dermatoses making treatment difficult. Ongoing research into these mechanisms is allowing more directed intervention possible. This article describes some of the recent experiences in the therapy of lichen planus, lichen nitidus, toxic epidermal necrolysis, and graft versus host disease.