Deck 8: Skin Disorders

Question 1

Which of the following statements applies 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.

Answer 1

The infection is highly contagious.

Question 2

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.

Answer 2

They present as non-pruritic purplish macules.

Question 3

Which disease is considered an autoimmune disorder?

A) Pemphigus
B) Erysipelas
C) Contact dermatitis
D) Scleroderma

Answer 3

Pemphigus

Question 4

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 5

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

Question 6

Plantar warts are caused by:

A) the fungus aspergillus.
B) a parasitic arthropod.
C) human papillomavirus.
D) the bacterium Streptococcus pyogenes.

Question 7

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

Question 8

Tinea capitis is an infection involving the:

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

Question 9

How are antiviral drugs effective in treating a viral infection?

A) They destroy the virus if administered for at least 2 weeks.
B) They limit the acute stage and viral shedding.
C) They prevent any systemic effects of viruses.
D) They prevent any secondary bacterial infection.

Question 10

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 11

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 12

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

A) Purplish papules that can erode and become open ulcers
B) Firm, raised pruritic nodules that can become cancerous
C) Moist, red vesicles, which develop into bleeding ulcers
D) Begins as a red papule and develops into silvery plaques

Question 13

What causes the pruritus associated with scabies?

A) An allergic reaction to the causative microbe due to endotoxins
B) Mites burrowing into the epidermis and reaction to their feces
C) Bleeding and injected toxin from bites of the larvae
D) Neurotoxins secreted by mites on the skin surface

Question 14

Which of the following areas lacks blood vessels and nerves?

A) Epidermis
B) Dermis
C) Subcutaneous tissue
D) Fatty tissue

Question 15

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 16

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

A) Severe pain around the mouth
B) Malaise and fatigue
C) Fever and severe headaches
D) Mild tingling along the nerve or on the lips

Question 17

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

A) Papule
B) Pustule
C) Vesicle
D) Macule

Question 18

Which type of microbe causes Tinea infections?

A) Fungus
B) Virus
C) Gram-negative bacterium
D) Mite

Question 19

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

A) Furuncles
B) Verrucae
C) Scabies
D) Tinea

Question 20

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 21

Which of the following factors has 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

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

Question 24

Leprosy (Hansen's disease) is caused by:

A) a fungus.
B) a bacterium.
C) a virus.
D) a helminth.

Question 25

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 26

One factor that is responsible for increasing the mortality rate among patients suffering with necrotizing fasciitis is:

A) a delay in initial diagnosis.
B) lack of proper antibiotics.
C) the appearance of additional opportunistic infections.
D) secondary fungal infections.

Question 27

Which of the following applies to actinic keratoses?

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 28

The pathological change associated with scleroderma is:

A) abnormal activation of T lymphocytes and an increase of 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 29

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 30

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