Derm I (to scratch or not to scratch)

Question 1

What is a positive nikolsky sign?

Answer 1

A blister that is formed in an area where you place a pencil eraser on the skin and gently twists back and forth.

Question 2

What is pityriasis rosea?

Answer 2

Annular pink patch w/ scales that spreads to the torso that following cleavage lines of the upper torso in 10-14 days.
(Herald patch and Christmas tree pattern)

Question 3

What are the 6 ps of Lichen Planus?

Answer 3

Pruritic
Polygonal 
Planar 
Purple papules
Plaques

Question 4

What are some causes of drug eruptions?

Answer 4

Viral***
Drug-drug interactions
Environmental

Question 5

What is dermatitis herpetiformis (aka duhring disease) related to?

Answer 5

Rare but persistent blistering skin condition related to celiac diease

Question 6

What is the first line tx for dermatitis herpetiformis (aka duhring disease)?

Answer 6

Dapsone - sulphone antibiotic

Question 7

Desquamation lesions: SJS and TEN is MCC by what?

Answer 7

Medications: antibiotics: sulfa based

Question 8

Desquamation lesions: SJS and TEN is more commonly associated with what?

Answer 8

HIV infection

Question 9

Before the desquamation lesions: SJS and TEN rashes appear there is usually a prodromal illness that is present for several days resembling what?

Answer 9

A URI or flu-like illness

Question 10

What are you most worried about with desquamation lesions: SJS and TEN?

Answer 10

Fluid loss - hypoTN and dehydration
Infection
Hypothermia

Question 11

Actinic keratosis (AKs) is typically related to what?

Answer 11

Exposure to sun

Question 12

Most common locations of Actinic keratosis (AKs)?

Answer 12

Face, lips, ears, back of hands, forearms, scalp, or neck

Question 13

What is a high risk associated with Actinic keratosis (AKs)?

Answer 13

May progress to SCC

Question 14

What is the difference between Seborrheic Keratosis (SKs) and Actinic keratosis (AKs)?

Answer 14

Noncancerous

BIG, brown, black, or light tan

Question 15

What do you want to consider when an adult pt presents with scabies?

Answer 15

Consider STI

Question 16

What is a potential risk caused by a bite from a brown recluse?

Answer 16

Tissue necrosis

• surgical problem
• hemotoxic

Question 17

A bite from a black widow will cause?

Answer 17

Neurotoxin - release of acetylcholine and norepi.

- medical emergency (very intense pain)

Question 18

MC sx of a black widow bite?

Answer 18

Board-like abdominal cramp w/o abdominal tenderness

Question 19

What does the rash look like in a pt who has been bitten by a tick carrying Lyme dx?

Answer 19

Erythema migrans - “bull’s eye”

Question 20

What are the 3 end-organ systems to be concerned with in a pt who has been bitten by a tick carrying Lyme dx?

Answer 20

Dermatological, neurological, MSK

Question 21

Best tx for a pt has been bitten by a tick carrying Lyme dx?

Answer 21

Doxycycline 100mg BID x 14 days

Question 22

Is a bite from a hobo spider medical or surgical problem?

Answer 22

Surgical problem

Question 23

What is epidermolysis bullosa?

Answer 23

Formation of blisters from trauma or friction

Question 24

Tx for epidermolysis bullosa?

Answer 24

Peirce, drain, and dress blisters to promote healing

Question 25

Cause of dyshidrotic eczema?

Answer 25

Small blisters on the lateral surface of the hands and feet caused by exacerbation during periods of high stress (student in PA school)

Question 26

MC pemphigoid lesion?

Answer 26

Pemphigus vulgaris (rare autoimmune dz)