1.Perivascular only-Lymphocytes predominate

 
        1) Hyphae and spores in cornified layer 
               
               Tinea versicolor
                Dermatophytosis
       
         2)Corynebacteria in cornified layer
                Erythrasma
                Pitted Keratolysis

         3) No melanocytes in basal layer
                 Vitiligo

          4)Ertravasated erythrocytes and/or siderophages
                  Schamberg's disease

          5)No other abnorrnalities
                 Viral exanthems of some kinds
                 Drug eruption(one type)
                 Urticaria,late
                 Erythema figuratum,superficial

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2.Perivascular and Interstitial

        
         1)Lymphocyte predominant
               a)Extravasated erythrocyte and/or siderophages
                         Schamberg's disease
               b)Eosinophiles in variable number
                          Pruritic urticarial papules and plaques of pregnancy

          2)Neutrophiles prominent
                          Dermatitis herpetiformis
                          Linear IgA dermatosis
                          Dermatitis herpetiformis-like drug eruption
                          Acute discoid lupus erythematosus
                          Systemic lupus erythematosus
                          Luikocytoclastic vasculitis
                          Erythema marginatum

           3)Eosinophiles prominent
 
                          Bullous pemphigoid/Herpes gestationis,urticarial
                          Pemphigus vulgaris,urticarial
                          Arthropod assault,superficial
                          Pruritic urticarial papules and plaques of pregnancy

           4)neutrophiles and eosinophiles prominent
                          Urticaria

           5)Melanophages
                           Postinflammatory pigmentary alteration
                           Macular amyloidosis

           6)Siderophages
                           Stasis changes

           7)Macrophages with features of melanophages and
                  siderophages
                           Minocycline-induced eruption

           8)Mast cells
                           Urticaria pigmentosa