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Macule: flat circumscribed area that is a change in thecolor of skin, less than 1 cm in diameterExample: freckles, flat mole...
•   Papule: an elevated, firm, circumscribed area; less    than 1 cm in diameter•   Examples: wart, elevated moles, lichen ...
•   Wheal: elevated, irregular-shaped area of cutaneous    edema; solid, transient, variable diameter•   Examples: insect ...
•   Nodule: elevated, firm circumscribed lesion; deeper    in dermis than a papule; 1-2 cm in diameter•   Examples: erythem...
•   Pustule: elevated, superficial lesion; similar to a    vesicle but filled with purulent fluid•   Examples: impetigo, acne
•   Telangiectasia: fine, irregular, red lines produced by    capillary dilation•   Examples: telangiectasia in rosacea
•   Scale: heaped-up, keratinized cells; flaky skin;    irregular; thick or thin; dry or oily; variation in size•   Example...
•   Scar: thin to thick fibrous tissue that replaces    normal skin following injury or laceration to the    dermis•   Exam...
•   Fissure: linear crack or break from the epidermis    to the dermis; may be moist or dry•   Examples: Athlete’s foot, c...
•   Erosion: Loss of part of the epidermis; depressed,    moist, glistening; follows rupture of a vesicle or    bulla•   E...
•   Keloid: irregular-shaped, elevated, progressively    enlarging scar; grows beyond the boundaries of the    wound; caus...
•   Bulla: vesicle greater than 1 cm in diameter•   Examples: blister, pemphigus vulgaris
•   Vesicle: elevated, circumscribed, superficial, not    into dermis, filled with serous fluid; less than 1    cm in diamete...
•   Cyst: elevated, circumscribed, encapsulated    lesion,; in dermis or subcutaneous layer; filled    with liquid or semis...
•   Plaque: elevated, firm, and rough lesion with flat    top surface greater than 1 cm in diameter•   Examples: psoriasis, ...
•   Crust: dried serum, blood, or purulent exudates;    slightly elevated; size varies; brown, red, black, tan,    or stra...
•   Lichenification: rough, thickened epidermis    secondary to persistent rubbing, itching or skin    irritation; often in...
•   Ulcer: loss of epidermis and dermis; concave;    varies in size•   Examples: decubiti, statis ulcer
•   Tumor: elevated and solid lesion; may or may not    be clearly demarcated; deeper in dermis; greater    than 2 cm in d...
•   Excoriation: loss of the epidermis; linear    hollowed-out, crusted area•   Examples: abrasion or scratch, scabies
•   Atrophy: thinning of skin surface and loss of skin    markings; skin translucent and paper-like•   Examples: striae; a...
•   Patch: a flat, nonpalpable, irregular-shaped macule    greater than 1 cm in diameter•   Examples: vitiligo, port-wine s...
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Derm slides

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Derm slides

  1. 1. Macule: flat circumscribed area that is a change in thecolor of skin, less than 1 cm in diameterExample: freckles, flat moles, petechiae, measles, scarletfever
  2. 2. • Papule: an elevated, firm, circumscribed area; less than 1 cm in diameter• Examples: wart, elevated moles, lichen planus
  3. 3. • Wheal: elevated, irregular-shaped area of cutaneous edema; solid, transient, variable diameter• Examples: insect bites, urticaria, allergic reaction
  4. 4. • Nodule: elevated, firm circumscribed lesion; deeper in dermis than a papule; 1-2 cm in diameter• Examples: erythema nodosum, lipoma
  5. 5. • Pustule: elevated, superficial lesion; similar to a vesicle but filled with purulent fluid• Examples: impetigo, acne
  6. 6. • Telangiectasia: fine, irregular, red lines produced by capillary dilation• Examples: telangiectasia in rosacea
  7. 7. • Scale: heaped-up, keratinized cells; flaky skin; irregular; thick or thin; dry or oily; variation in size• Example: flaking of skin with seborrhic dermatitis following scarlet fever or flaking of skin following a drug reaction; dry skin
  8. 8. • Scar: thin to thick fibrous tissue that replaces normal skin following injury or laceration to the dermis• Example: healed wound or surgical incision
  9. 9. • Fissure: linear crack or break from the epidermis to the dermis; may be moist or dry• Examples: Athlete’s foot, cracks at the corner of the mouth
  10. 10. • Erosion: Loss of part of the epidermis; depressed, moist, glistening; follows rupture of a vesicle or bulla• Examples: varicella, variola after rupture
  11. 11. • Keloid: irregular-shaped, elevated, progressively enlarging scar; grows beyond the boundaries of the wound; caused by excessive collagen formation during healing• Examples: keloid formation following surgery
  12. 12. • Bulla: vesicle greater than 1 cm in diameter• Examples: blister, pemphigus vulgaris
  13. 13. • Vesicle: elevated, circumscribed, superficial, not into dermis, filled with serous fluid; less than 1 cm in diameter• Examples: varicella (chickenpox), herpes zoster (shingles)
  14. 14. • Cyst: elevated, circumscribed, encapsulated lesion,; in dermis or subcutaneous layer; filled with liquid or semisolid material• Examples: sabaceous cyst, cystic acne
  15. 15. • Plaque: elevated, firm, and rough lesion with flat top surface greater than 1 cm in diameter• Examples: psoriasis, seborrheic, and actinic keratoses
  16. 16. • Crust: dried serum, blood, or purulent exudates; slightly elevated; size varies; brown, red, black, tan, or straw-colored• Examples: scab or abrasion, eczema
  17. 17. • Lichenification: rough, thickened epidermis secondary to persistent rubbing, itching or skin irritation; often involves flexor surface or extremity• Examples: chronic dermatitis
  18. 18. • Ulcer: loss of epidermis and dermis; concave; varies in size• Examples: decubiti, statis ulcer
  19. 19. • Tumor: elevated and solid lesion; may or may not be clearly demarcated; deeper in dermis; greater than 2 cm in diameter• Examples: neoplasms, benign tumor. lipoma
  20. 20. • Excoriation: loss of the epidermis; linear hollowed-out, crusted area• Examples: abrasion or scratch, scabies
  21. 21. • Atrophy: thinning of skin surface and loss of skin markings; skin translucent and paper-like• Examples: striae; aged skin
  22. 22. • Patch: a flat, nonpalpable, irregular-shaped macule greater than 1 cm in diameter• Examples: vitiligo, port-wine stains, Mongolian spots, cafe au lait patch

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