Primary Lesions
      -macule
      -patch
      -papule
      -plaque
      -nodule
      -tumor
      -vesicle
      -bulla
      -pustule
      -cyst
 Secondary Lesions
      -scale
      -crust
      -excoriation
      -lichenification
      -maceration
      -fissure
      -erosion
      -ulcer
 Distinct Lesions
      -wheal/hive
      -burrow
      -comedone
      -atrophy
      -keloid
      -fibrosis
      -petechiae
      -telangiectasis
      -milium

A pustule is pus containing bubble often categorized according to whether or not they are related to hair follicles:
      -follicular - generally indicative of local infection
              - folliculitis - superficial, generally multiple
              - furuncle - deeper form of folliculitis
              - carbuncle - deeper, multiple follicles coalescing
      -nonfollicular - may indicate systemic infection