<prompt> Interface dermatitis is a histological feature ofPsoriasisLichen planusPityriasis roseaDermatophytosis  <response>: Interface dermatitis includes diseases in which the primary pathology involves the dermo-epidermal junction. hence called interface. The salient histological findings include basal cell vacuolization, apoptotic keratinocytes colloid or Civatte bodies, and obscuring of the dermo-epidermal junction by inflammatory cells. Lupus erythematosus, dermatomyositis, lichen planus, graft versus host disease, erythema multiforme, fixed drug eruptions are some examples. Ref Harrison 20th edition pg 1234 