Skin Lesions

Question 1

Macule

Answer 1

Flat, circumcised area, change in color of skin

Ex. Freckles, flat moles (nevi), petechiae

Question 2

Papule

Answer 2

Elevated, firm, circumscribed area less than 1cm in diameter
Ex. Wart, elevated moles, skin tag, neurofibroma

Question 3

Plaque

Answer 3

Elevated, firm, and rough lesion, with flat top surface, greater than 1cm
Ex. Psoriasis, eczema

Question 4

Vesicle

Answer 4

Elevated, circumscribed, superficial (not into dermis), filled with serous fluid; <1cm

Question 5

Wheal

Answer 5

Elevated irregular shaped areas of cutaneous enema

Ex. Insect bites, allergic reaction, lupus erythematous

Question 6

Bulla

Answer 6

Vesicle greater than 1cm in diameter filled with clear fluid

Ex. Blister, impetigo, drug rxn

Question 7

Postule

Answer 7

Elevated, superficial lesion, similar to vesicle but filled with purulent fluid
Ex. Impetigo, acne, herpes simplex

Question 8

Furuncle

Answer 8

Abscess or boil
Ex. Localized bacterial lesion caused by a staph pathogen
A nodule surrounded by erythema and edema. Profession becomes a pustule and the cone fills with sanguineous purulent exudate
Red, hot and extremely tender