Dermatologic nomenclature

Primary lesions

Normal dermal anatomy.

Dermatology Nomenclature

Small lesions (<0.5cm)

Name Raised/Palpable Fluid-Filled Other Description Diagram
Macule No None flat, cirumscribed, colored
Papule Yes None Solid
Vesicle Yes Clear
Pustule Yes Pus Leukocytes or keratin

Large lesions (>0.5cm)

Name Raised/Palpable Fluid-Filled Other Description Diagram
Patch No None Large macule (flat, colored)
Plaque Yes None Superficially raised, circumscribed solid area
Nodule Yes None Distinct large papule
Bulla Yes Clear Large vesicle/blister or exposed epidermal layer
Wheal Yes Edema Firm and edema of dermis

Other

Ulcer, fissue, and erosion

Secondary lesions

Section One

  • Scales – dead epidermal cells (dry white dandruff)
  • Cursts – dead epidermal cells + serum (oily secretions)/pus
  • Erosion –focal effacement of epidermis
  • Ulcer – focal effacement of epidermis +dermis
  • Fissure – linear crack into epidermis +dermis
  • Atrophy – thinning of epidermis +dermis
  • Scar – healed skin with connective and epithelialized granulation tissue
  • Lichenification – thickened epidermis
  • Petechia – non-blanching, micro- hemorrhages (3mm) into the dermis
  • Purpura - non-blanching, small hemorrhage (0.5-1cm) into dermis
  • Ecchymoses – large area of hemorrhage into dermis (a.k.a bruising)

See Also

References

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