The objective of this study is to assess the efficacy and tolerance of a single cycle of rituximab in control of bullous pemphigoid.~the main objects are :~to assess that a single cycle of rituximab is able to control patient with corticosteroid-dependent bullous pemphigoid,~to avoid the use of corticosteroid in long time,~to evaluate duration of control disease and side effect with a single cycle of rituximab.
The aim of the study is to assess that it will be possible to control with a single cycle of rituximab patient with bullous pemphigoid.