1.psoriasiform only

1)Lymphocyte predominate
      a)Hyphae in cornified layer 
                   Dermatophytosis
      b)Innumerable mite,progeny of mite,and detritusof mites
                   Norwegian scabies
      c)Mixed-cell infiltratewith predominate lymphocytes,
        signs of lichen simplex chronicus,including multinucleate
        and satellte-shaped fibrocytes 
                   Persistent light eruption(actinic reticuloid)
      d)Mounds of parakeratosis
  
                    Pityriasis rosea,herald patch

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2.Lichenoid

1)Lymphocyte predominate
      a)Periadnexal infiltrate,indibidual necrotic keratinocytes 
                    Lichen striatus
      b)Wiry bundles of collagen in upper part of dermis,
        lymphocytes in epidermis 
   
                     Mycosis fungoides,plaque

2)Histiocytes and ,sometimes plasma cells predominate
                     syphilis,secondary