Dermatology II Highlights

Question 1

Most common benign epithelial tumor is what?

Answer 1

Seborrheic keratosis

Question 2

True or false: acanthosis nigricans is difficult to completely eradicate

Answer 2

True

Question 3

True or false: Cryo is not effective for hemangiomas/ cherry angiomas

Answer 3

True

Question 4

True or false: Actinic keratosis is precancerous to SCC

this is on exam

Answer 4

True

Question 5

What is the m/c precursor lesion of Squamous cell carcinoma

Answer 5

Actinic keratosis

Question 6

What condition is characterized by rough (coarse like sandpaper) scaly lesions on sun-exposed skin?

Answer 6

Actinic keratosis

Question 7

What are 2 key aspects of pediculosis (lice) Tx?

Answer 7

Topical ivermectin and special comb

Question 8

Intense, “Itching so bad I can’t sleep” with burrows, excoriations, or serpiginous ridges are classic Sx of what?

Answer 8

Scabies (sarcoptes scabiei)

Question 9

Scabies (sarcoptes scabiei) usually spares what in adults?

Answer 9

Head & neck

Question 10

Latrodectism: Latrodectus (widow spiders): what is the classic presentation?

Answer 10

Initially asymptomatic or mild pain, then muscle pain

Question 11

1) What should you consider for black widow bites?
2) What else should you do?

Answer 11

1) Antivenom
2) Monitor vitals and breathing closely

Question 12

How do you treat recluse bites?

Answer 12

Wound care, analgesics, tetanus prophylaxis, surgical debridement, consider admission (severe cases)

Question 13

Red, white, blue lesions are Sx of what?

Answer 13

Recluse spider bites

Question 14

What has a ~10% of necrosis?

Answer 14

Recluse spide bites

Question 15

True or false: systemic Sx involving brown recluse bites are rare

Answer 15

True

Question 16

What is one Tx for a brown recluse spider bite?

Answer 16

Surgical debridement

Question 17

Is alopecia areata scarring or non-scarring?

Answer 17

Non-scarring

Question 18

What typically presents w. “exclamation point hairs”?

Answer 18

Alopecia areata

Question 19

Subungual debris is a Sx of what?

Answer 19

Onychomycosis (Tinea Unguium)

Question 20

What are the 4 potential locations of tinea?

Answer 20

Capitis, corporis, unguium, pedis

Question 21

Onychomycosis (Tinea Unguium):
1) Tx in fingernails?
2) Tx in toenails?

Answer 21

1) PO griseofulvin 500mg 1 PO BID w/high fat meal x 4mo,
2) 1st line griseofulvin, 2nd line PO terbinafine x 12wks
-must monitor ANC and d/c if ANC< 1000

Question 22

True or false: you must confirm a Onychomycosis (Tinea Unguium) Dx with a lab test before Tx

Answer 22

True

Question 23

How must you confirm an onychomycosis (Tinea Unguium) dx?

Answer 23

Hepatic function test & CBC q4-6 weeks for PO antifungals

Question 24

What does a very flocculant, painful, warm paronychia need?

Answer 24

L&D

Question 25

Dermatophytosis: list all the types of tinea

Answer 25

1) Tinea pedis: foot 2) Tinea manum: hand 3) Tinea cruris: crural fold, groin “jock itch” 4) Tinea corporis, aka “ringworm”: body, extremities 5) Tinea facialis: facial 6) Tinea capitis: scalp hair 7) Tinea barbae: beard hair

Question 26

1) What is found with a moist environment on the skin? 2) What needs to be monitored when treating this condition?

Answer 26

1) Dermatophytosis/ tinea 2) LFTs and CBC/ANC

Question 27

What will you see when you scrape tinea versicolor?

Answer 27

Yeast & elongated hyphae (think "spaghetti and meatballs")

Question 28

How may tinea versicolor under a woods lamp? What does this distinguish it from?

Answer 28

Fluoresce blue/green; vitiligo remains white without scale

Question 29

What are Malassezia?

Answer 29

Microscopic spores and hyphae

Question 30

Poxvirus is also called?

Answer 30

Molluscum contagiosum

Question 31

1) Dome-shaped umbilicated papules describe what? 2) What is the best Tx?

Answer 31

1) Molluscum contagiosum 2) Curettage or liquid nitrogen (cryotherapy)

Question 32

Burning, stinging, grouped vesicles on erythematous base (“dew drops on a rose petal”) describe what?

Answer 32

Herpes simplex (HSV)

Question 33

When is suppressive antiviral therapy used for HSV?

Answer 33

Frequent or severe recurrences

Question 34

True or false: VZV vaccination exists

Answer 34

True

Question 35

Varicella zoster virus (VZV): 1) What can it occur as in adults? 2) How?

Answer 35

1) Shingles 2) VZV dormant in cranial nerve sensory ganglia & spinal dorsal root ganglia after primary infection

Question 36

What lesions resemble chickenpox but follow unilateral dermatomal pattern?

Answer 36

Shingles varicella zoster virus (VZV)

Question 37

1) What condition has a unilateral dermatomal pattern? Bonus q: Tx?

Answer 37

1) Varicella zoster virus (VZV) Shingles Valacyclovir or famciclovir within 72 hrs (uncomplicated), tapering course steroids; IV acyclovir for extradermatomal complications

Question 38

Pain usually precedes rash in what condition?

Answer 38

Varicella zoster virus (VZV) shingles

Question 39

Macerated, mirror image regions in intrigenous areas with satellite lesions are characteristic of what?

Answer 39

Cutaneous candidiasis

Question 40

There is _____________ for anogenital HPV types to prevent infection & reduce cancer

Answer 40

vaccination

Question 41

What is the mainstay of ocular verrucae (warts/ HPV) Tx?

Answer 41

Oculoplastic surgery

Question 42

Warts are also called what?

Answer 42

HPV/ verrucae