Ch. 12 - Pustules

Question 0

T/F: Not all pustular dermatoses are caused by pathogenic microorganisms.

Answer 0

True

Question 1

Collections of neutrophils that are situated superficially, usually in a hair follicle or just below the stratum corneum.

Answer 1

Pustule

Question 2

What is the most common dermatologic disease with negative psychosocial ramifications?

Answer 2

Acne

Question 3

A disorder affecting pilosebaceous units in the skin.

Answer 3

acne vulgaris

Question 4

What are the hallmark of acne vulgaris?

Answer 4

comedones

Question 5

non-inflamed lesions in acne

Answer 5

comedones

Question 6

What are the two types of comedones?

Answer 6

1. open comedone - “black head”; dilated pore filled with black keratinous material
2. closed comedone - “white head”; small, flesh-colored, dome-shaped papule

Question 7

What are the 3 types of inflammatory acne lesions?

Answer 7

1. papules
2. nodules
3. pustules

Question 8

Where is acne found?

Answer 8

areas with numerous sebaceous glands (face & upper trunk)

Question 9

What is caused by use of corticosteroids and is distinguished from acne vulgaris by its sudden onset and appearance?

Answer 9

Steroid acne

Question 10

What is the most important aspect of a successful acne treatment program?

Answer 10

patient compliance

Question 11

What are the 3 factors involved in acne pathogenesis?

Answer 11

1. androgens
2. follicular obstruction
3. Propionibacterium acnes (bacteria)

Question 12

What disorder represents an inflammatory reaction in the skin resulting from infection of the epidermis with Candida albicans?

Answer 12

Candidiasis

Question 13

Which disorder appears as a ‘beefy red’ erythematous area with surrounding satellite papules and pustules?

Answer 13

Candidiasis

Question 14

Who is Candidiasis particularly common in?

Answer 14

diaper-clad infants & in hospitalized patients

Question 15

an inflammatory reaction of the hair follicle caused by bacteria, usually S. aureus. The lesion appears as a pustule, often with a central hair.

Answer 15

folliculitis

Question 16

Where can colonization of S. aureus occur with folliculitis?

Answer 16

nose, axillae, & groin

Question 17

T/F: Folliculitis is usually asymptomatic; occasionally, patients complain of mild discomfort associated with the lesions.

Answer 17

TRUE

Question 18

Hot-tub folliculitis occurs in individuals exposed to hot-tubs and swimming pools contaminated with what microorganism?

Answer 18

Pseudomonas aeruginosa

Question 19

a disorder of the neck and jaw of men whose beard hairs are sharply curved. This configuration causes the hairs to re-enter the skin, where they induce an inflammatory reaction, resulting in papules and pustules.

Answer 19

Pseudofolliculitis barbae

Question 20

a common follicular disorder that presents as tiny, rough, scaling, follicular papules (NO pustules) on the backs of the upper arms, buttocks, thighs, and facial cheeks.

Answer 20

Keratosis pilaris

Question 21

follicular disorder manifested by pruritic papules on the face & trunk; it is most frequently found in HIV infected patients .

Answer 21

Eosinophilic folliculitis

Question 22

Patient’s with recurrent follicullitis may be…

Answer 22

chronic ‘carriers’ of S. aureus

Question 23

represents a superficial skin infection caused by Gram-positive bacteria, usually S. aureus, and less commonly Streptococcus pyrogenes. The early lesions are pustules, which quickly break to form crusts.

Answer 23

Impetigo

Question 24

What is the most common bacterial infection in children?

Answer 24

impetigo

Question 25

What is the most commonly encountered clinical finding in impetigo?

Answer 25

honey-colored crust

Question 26

Where is the most common areas impetigo is found on the body?

Answer 26

face & around the nose & mouth

Question 27

T/F: impetigo affects the dermal layer of skin.

Answer 27

FALSE; (does not extend deeply, no ulcers form)

Question 28

streptococcal infection that goes deeper than the epidermis, so when the crust is removed an ulcer is noted.

Answer 28

ecthyma

Question 29

T/F: honey-coloredd crusts indicate that the skin is primarily infected in impetigo?

Answer 29

FALSE; (secondarily)

Question 30

a chronic inflammatory disorder affecting the blood vessels and pilosebaceous units of the face clinically presenting with papules & pustules are superimposed on a background of erythema & telangiectasia.

Answer 30

Rosacea

Question 31

What are the 4 major clinical subtypes of rosacea?

Answer 31

1. vascular 2. papulopustular 3. rhinophyma 4. ocular

Question 32

What aspect of the body is associated with rosacea?

Answer 32

the central third of the face and spares the lateral aspects of the forehead and cheeks

Question 33

What sometimes develops in patients with rosacea?

Answer 33

Rhinophyma

Question 34

a rare deep fungal infection presenting with skin manifestations caused by dimorphic fungus that presents as initial formation of pustules, plaques, & nodules evolving into verrucous plaques.

Answer 34

Coccidioidomycosis

Question 35

a dermatophytic infection, frequently of the scalp, that appears as an indurated, boggy, inflammatory plaque studded with pustules

Answer 35

kerion

Question 36

What is the most common organism causing a kerion?

Answer 36

Trichophyton rubrum

Question 37

pustules infecting hair follicles

Answer 37

dermatophytes

Question 38

represents a systemic infection characterized by fever, arthralgia, tenosynovitis, septic arthritis, & hemorrhagic pustules.

Answer 38

Gonococcemia (gonococcal arthritis-dermatitis syndrome)

Question 39

Pustules in bacterial sepsis are...

Answer 39

purpuric

Question 40

Sterile pustules are the hallmark of what skin condition?

Answer 40

subcorneal pustular dermatosis

Question 42

What disease is characterized by annular or expanding, polycyclic collections of pustules on a red base?

Answer 42

subcorneal pustular dermatosis