2/7/17 Dr. Florell Cutaneous Infection TEST #2

Question 1

What does the stratum corneum prevent?

Answer 1

-Water loss and chemical entry

Question 2

The dermis is tough and repels what?

Answer 2

-physical insults

Question 3

What two layers are found in the dermis?

Answer 3

• Papillary dermis

- Reticular dermis

Question 4

What is the Adnexa?

Answer 4

• Hair follicles

- Sweat glands

Question 5

What are two types of bacterial cutaneous infections?

Answer 5

• Impetigo

- Follliculitis

Question 6

What are three types of viral cutaneous infections?

Answer 6

• Herpes virus
• Molluscum contagiosum
• Verruca vulgaris

Question 7

What type of cocci is on the normal skin flora?

Answer 7

-Aerobic cocci

Question 8

What percent of outpaitient dermal visits are bacterial?

Answer 8

-20%

Question 9

If you have impetigo what part of the skin does it affect?

Answer 9

-Epidermis

Question 10

If you have Folliculitis what part of the skin unit does it affect?

Answer 10

-Appendages

Question 11

What are three types of fungal cutaneous infections?

Answer 11

• Tinea versicolor
• Tinea corporis
• Deep fungal infection

Question 12

What are two types of infestation cutaneous infections?

Answer 12

• Scabies

- Myiasis

Question 13

What are most cutaneous infections caused by?

Answer 13

-Staph aureus

Question 14

What are three bacteria causes of Impetigo?

Answer 14

• Staphylococcal
• Streptococcal
• Mixed infections

Question 15

What is the main bacterial cause of Impetigo?

Answer 15

-Staphylococcal

Question 16

How does impetigo manifest itself?

Answer 16

-Thin, straw colored discharge noted which dries to form golden’yellow crusts

Question 17

What is impetigo most commonly found on people?

Answer 17

• Exposed areas
• Face
• Hands
• Neck
• extremities

Question 18

What are the treatments for impetigo?

Answer 18

• Antibiotic ointment

- Systemic antibiotic

Question 19

If a patient comes into your clinic with discrete, thin-walled vesicles that become pustular and rupture what might they have?

Answer 19

-Impetigo

Question 20

If you see a hair coming straight from the center of a pustule what might that be indicative of?

Answer 20

-Some type of folliculitis

Question 21

In folliculitis what are the shape of the pustules?

Answer 21

-Dome-shaped around hair follicles

Question 22

In bacterial folliculitis what is the most common cause?

Answer 22

-Staph aureus

Question 23

What are the treatments for folliculitis?

Answer 23

• Decrease bacterial load (antibacterial soap)

- Topical or systemic antibiotics

Question 24

What type of parasite are viruses?

Answer 24

-Obligatory intracellular

Question 25

What three viral infections involve the epidermis?

Answer 25

- Molluscum cotagiosum - Herpesvirus - Verruca

Question 26

What type of viral infection involves the skin appendages (hair follicle)?

Answer 26

-Folliculitis (herpesvirus)

Question 27

What does a positive interpretation require from a Tzanck smear for herpesvirus?

Answer 27

- Multi-nucleated keratinocytes | - Peripheral marginization of chromatin

Question 28

After primary infection with Herpes (varicella) Zoster where does it remain latent at?

Answer 28

-Dorsal root ganglion cells

Question 29

What is the treatment of Herpes (varicella) Zoster?

Answer 29

-Antiviral therapy

Question 30

What type of Virus is herpesvirus infection?

Answer 30

-Double Stranded DNA

Question 31

What type of virus is varicella virus?

Answer 31

-Double stranded DNA

Question 32

What type of virus is cytomegalovirus?

Answer 32

-double stranded DNA

Question 33

What type of virus is Epstein-Barr virus?

Answer 33

-Double stranded DNA

Question 34

Where do you typically see oral herpes?

Answer 34

- Keratinized/masticatory mucosa - palate - gingiva - tongue

Question 35

What type of herpesvirus is a life threatening infection of a pre-existing skin rash, usually atopic dermatitis?

Answer 35

-Eczema herpeticum

Question 36

What is oral hairy leukoplakia associated with?

Answer 36

-Epstein-Barr virus infection

Question 37

Who does oral hairy leukoplakia occur most commonly in?

Answer 37

-HIV infected patients

Question 38

What are three other groups of people besides HIV patients can you find oral hairy leukoplakia?

Answer 38

- Chemotherapy - Organ transplant - Leukemia

Question 39

What is the treatment for oral hairy leukoplakia?

Answer 39

- Systemic antiviral therapy such as: - Acyclovir - Valacyclovir - Famiciclovir

Question 40

What is Molluscum contagiosum caused by?

Answer 40

-Poxvirus

Question 41

What are three groups that you generally find molluscum contagiosum in?

Answer 41

- Young children - Sexually active adults - Systemic T-cell immunosupression (HIV)

Question 42

How is Molluscum contagiosum transmitted?

Answer 42

-Direct skin to skin contact (especially if skin is wet)

Question 43

If you see Hnderson-Paterson bodies in a histology side what does that indicate?

Answer 43

-Molluscum contagiosum

Question 44

What is the treatment for molluscum?

Answer 44

-Spontaneous resolution within 2 yrs

Question 45

If you see a thick granular cell layer with koilocytes what does that indicate?

Answer 45

-Verrucous epidermal

Question 46

What are two types of fungal infections that effect the epidermis?

Answer 46

- Tinea versicolor | - Dermatophytosis

Question 47

If a rash is scaly what type of preparation should you do?

Answer 47

-KOH preparation

Question 48

If you have hyphae and yeast in the epidermis what is that indicative of?

Answer 48

-Tinea versicolor

Question 49

What causes Tinea versicolor?

Answer 49

-Pityrosporum orbiculare

Question 50

Where is the most common site of infection on a person with Tinea versicolor?

Answer 50

-Upper trunk

Question 51

What are the treatments for Tinea versicolor?

Answer 51

-Topical or systemic antifungal agent

Question 52

Where can Dermatophytes survive on?

Answer 52

-Only on dead keratin skin, hair and nails

Question 53

T/F Dermatophytes can survive in the mouth or vagina where the stratum corneum does not form.

Answer 53

False | They can NOT

Question 54

If you have hyphae present in largest numbers at the advancing annular edge what is that indicative of?

Answer 54

-Dermatophytes

Question 55

What is the treatment of dermatophytes?

Answer 55

-Oral or topical antifungal

Question 56

What is the mariners wheel found in a histo slide indicitive of?

Answer 56

-Paracoccidiodomycosis

Question 57

What are most fungal infections a manifestation of?

Answer 57

-Systemic infections

Question 58

T/F Primary infections of deep fungal pathogens are introduced directly into the skin via puncture, abrasion, trauma resulting in an ulcer or verrucous lesion

Answer 58

True

Question 59

Who are most opportunistic fungal diseases seen in?

Answer 59

-Patients with leukemia or hematologic neoplasia

Question 60

What are the two types of opportunistic deep fungal infections?

Answer 60

- Candidiasis | - Aspergillosis

Question 61

T/F With scabies you will have intense itching

Answer 61

True

Question 62

If you have pruritic papular lesion, excorations and burrows what might they have?

Answer 62

-Scabies

Question 63

What is Myiasis?

Answer 63

-Infestation of human tissue by fly larvae

Question 64

If you have a dermatophyte infection (annular scaling plaque) what should the next step be?

Answer 64

-KOH prep