Lichen Planus Sclerosus Et Atrophicus (Hallopeau)

The literature of this subject betrays some confusion as to what is meant by the term planus et atrophicus. Hallopeau first described this condition, named it planus and later added the word sclerosus to the title. Crocker added the word morpheacus on account of the resemblance in certain instances to morphea. That the disease resembles morphea to a marked degree is evidenced in the cases of Stowers, Allen, Schamburg, and others. These patients, when exhibited before dermatologic societies, were considered by some to be instances of lichen planus et atrophicus, while others classed them as morphea. There are some cases recorded under this title that appear to be of the ordinary lichen planus type, exhibiting subsequent atrophy of papules, leaving white atrophic spots. These are not examples of the type to be described here. In 1887 Hallopeau1described the first case, and subsequently added