Deck 27: Skin Disorders

Question 1

How can pediculosis be diagnosed?

A)pruritus in hairy areas of the body
B)loss of blood due to lice bites
C)finding lice in clothing
D)the presence of nits at the base of hair shafts

Answer 1

the presence of nits at the base of hair shafts

Question 2

Which of the following is a common effect of a type I hypersensitivity response to ingested substances?

A)contact dermatitis
B)urticaria
C)discoid lupus erythematosus
D)psoriasis

Answer 2

urticaria

Question 3

Which of the following skin lesions are usually caused by Staphylococcus aureus?

A)furuncles
B)verrucae
C)scabies
D)tinea

Answer 3

tinea

Question 4

Which disease is manifested by large vesicles that coalesce and rupture?

A)pemphigus
B)discoid lupus erythematosus
C)lichen planus
D)scleroderma

Question 5

Why do secondary infections frequently develop in pruritic lesions?

A)loss of protective sebum
B)entry of resident flora while scratching the lesion
C)blockage of sebaceous glands
D)increased sweat production

Question 6

All of the following statements apply to malignant melanoma EXCEPT:

A)The malignant cell is a melanocyte.
B)They present as non-pruritic purplish macules.
C)The neoplasm grows rapidly and metastasizes early.
D)The lesion is usually dark or multicolored with an irregular border.

Question 7

Which of the following statements regarding acute necrotizing fasciitis is TRUE?

A)Infection is localized in a small area of the epidermis.
B)It is usually caused by S.aureus.
C)Spontaneous recovery usually occurs in 48 hours.
D)Infection rapidly causes extensive tissue necrosis and toxic shock.

Question 8

Which of the following best describes the typical lesion of psoriasis?

A)purplish papules
B)firm raised pruritic nodules
C)moist red vesicles
D)silvery plaques on an erythematous base

Question 9

Which of the following statements apply to impetigo?

A)Lesions usually appear on the hands and arms.
B)The cause is usually a virus.
C)The infection is highly contagious.
D)Scar tissue is common following infection.

Question 10

What is the major predisposing factor to squamous cell carcinoma?

A)viral infection
B)presence of nevi (moles)on the skin
C)exposure to ultraviolet light
D)frequent hypersensitivity reactions

Question 11

How are antiviral drugs effective in treating infection?

A)destroying the virus if administered for at least 2 weeks
B)limiting the acute stage and viral shedding
C)preventing any systemic effects of viruses
D)preventing any secondary bacterial infection

Question 12

What causes the pruritus associated with scabies?

A)an allergic reaction to the causative microbe
B)mites burrowing into the epidermis and their feces
C)bleeding and injected toxin from bites
D)neurotoxins secreted by mites

Question 13

What is a raised,thin-walled lesion containing clear fluid called?

A)papule
B)pustule
C)vesicle
D)macule

Question 14

What change occurs in the skin with psoriasis?

A)recurrent hypersensitivity reactions
B)autoimmune response
C)increased mitosis and shedding of epithelium
D)basal cell degeneration

Question 15

Herpes virus is usually spread by all of the following EXCEPT:

A)saliva during an exacerbation and for a short time thereafter
B)contact with the fluid in the lesion
C)contaminated blood
D)autoinoculation by fingers

Question 16

Which type of microbe causes Tinea infections?

A)fungus
B)virus
C)gram-negative bacterium
D)mite

Question 17

What condition does human papillomavirus cause?

A)shingles
B)acute necrotizing fasciitis
C)plantar warts
D)herpes zoster

Question 18

What is the common signal that a recurrence of herpes simplex infection is developing?

A)severe pain around the mouth
B)ruptured or crusted vesicles
C)fever,headache,and fatigue
D)mild tingling along the nerve or on the mouth

Question 19

Which of the following areas lacks blood vessels and nerves?

A)epidermis
B)dermis
C)subcutaneous tissue
D)fatty tissue

Question 20

Tinea capitis is an infection involving the:

A)trunk
B)feet
C)scalp
D)nails

Question 21

Which of the following factors have contributed to the increased incidence of Kaposi's sarcoma?

A)excessive sun exposure
B)increased number of nevi
C)increase in immunosuppressed individuals
D)presence of more seborrheic keratoses

Question 22

The cause of contact dermatitis can often be identified by:

A)using a culture and sensitivity test on the exudate
B)checking the frequency of the exacerbations
C)noting the location and size of the lesion
D)the type of pain associated with the lesion

Question 23

Systemic effects of acute necrotizing fasciitis include:

A)low-grade fever and malaise
B)toxic shock and disorientation
C)mild nausea and vomiting
D)headache and difficulty breathing

Question 24

Choose the best description of the typical lesion of impetigo:

A)large red painful nodule filled with purulent exudates
B)small vesicles that rupture to produce a crusty brown pruritic mass
C)red,swollen painful areas often with projecting red streaks
D)firm raised papules that may have a rough surface and may be painful

Question 25

Choose the correct match of the skin condition and its usual location:

A)scabies-fingers,wrists,waist
B)impetigo-legs,feet
C)pediculosis humanus corporis-scalp
D)seborrheic keratosis-feet ,hands

Question 26

Which of the following apply to actinic keratosis?

A)They predispose to malignant melanoma.
B)They arise on skin exposed to ultraviolet radiation.
C)They occur primarily on dark-skinned persons.
D)They are malignant and invasive.

Question 27

The pathologic change associated with scleroderma is:

A)abnormal activation of T-lymphocytes and increased cytokines
B)an autoimmune reaction damaging the epidermis
C)collagen deposits in the small blood vessels of the skin and sometimes the viscera
D)Type I hypersensitivity and increased serum IgE levels

Question 28

Which lesion distinguishes Tinea corporis?

A)small brown pruritic lines
B)painful and pruritic fissures
C)erythematous ring of vesicles with a clear center
D)firm,red,painful nodule or pustule