Fundamentals of Anatomy and Physiology

The Integumentary System 129

(A)

Bulla: (Large blister)

Same as a vesicle only

greater than 10 mm

Example:

Contact dermatitis, large

second-degree burns,

bulbous impetigo, pemphigus

Macule:

Localized changes in skin

color of less than 1 cm

in diameter

Example:

Freckle

(B)

Nodules: (^)
Solid and elevated; however, (^)
they extend deeper than (^)
papules into the dermis or (^)
subcutaneous tissues, greater (^)
than 10 mm (^)
(C)
Example: (^)
Lipoma, erythema, cyst, wart (^)
Pustule: (^)
Vesicles or bullae that^
become filled with pus,^
usually described as less (^)
than 0.5 cm in diameter (^)
Example: (^)
(E)
Acne, impetigo, furuncles, (^)
carbuncles (^)
Tumor:^
The same as a nodule
only greater than 2 cm
Example:^
Benign epidermal tumor
basal cell carcinoma^
(G)

(I)

Figure 6- 12 Various skin lesions.

Papule:^

Solid, elevated lesion less

than 1 cm in diameter

Example:

Elevated nevi

(D)

Ulcer:^

A depressed lesion of

the epidermis and upper

papillary layer of the dermis

Example:

Stage 2 pressure ulcer

(F)

Vesicle: (Small blister)

Accumulation of fluid between

the upper layers of the skin;

elevated mass containing

serous fluid; less than 10 mm

Example:

Herpes simplex, herpes

(H)^ zoster, chickenpox^

Urticaria, Hives:

Localized edema in the (^)
epidermis causing irregular
®^
(^) elevation that may be red
Learni ng^
or pale, may be itchy
Example:
Cengage^
Insect bite, wheal
(^)
©^