Blisters

1.

The patient in this photo has a dermatomal grouping of vesicles on an erythematous base, on his trunk. What is the most likely diagnosis?

a. Allergic contact dermatitis

b. Fixed drug eruption

c. Atopic dermatitis

d. Herpes simplex type 2

e. Herpes zoster

2.

A 50-year-old woman presents to you with blisters on her abdomen (see photo). Which of the following is the best description of these lesions?

a. Linear erythematous papules

b. Dermal nodules

c. Grouped vesicles on an erythematous base*

d. Erythematous, scaly plaques

e. Erythematous patches

3.

You diagnose a 17-year-old female with genital herpes simplex. She has no health insurance. Which of the following would you prescribe?

a. Oral acyclovir*

b. Oral cephalexin

c. Oral fluconazole

d. Oral gancyclovir

e. Oral valacyclovir

4.This 40-year old man comes to you with this finding on the bottom of his left foot. He has no other skin changes elsewhere. He volunteers that it appeared today after he wore a new pair of boots to his

construction job and they felt like they were “rubbing”. He took some naproxen this evening because of the pain but takes no other medications. What is the most likely diagnosis?

a. Allergic contact dermatitis

b. Bullous impetigo

c. Erythema multiforme

d. Fixed drug eruption

e. Friction blister*

5.A 30-year old woman presents to you with this finding. You perform a complete skin exam and find that she has similar finding on the other arm but no other skin changes. She reports that they are itchy but that she’s afraid to scratch them so she put bandaids over them to protect them. She otherwise feels well and reports that she recently had a conference and stayed in a hotel. What is the most likely diagnosis for this patient?

a. Allergic contact dermatitis

b. Bullous insect bites*

c. Cellulitis

d. Herpes zoster

e. Pemphigus vulgaris

6.This 7-year old boy is brought into the office by his mother for this rash on his cheek. He has no other rash elsewhere. He says it is more painful than itchy. He has never had anything like it before. He feels well otherwise. What is the most likely diagnosis for this patient?

a. Acne

b. Allergic contact dermatitis

c. Erythema multiforme

d. Herpes simplex*

e. Varicella zoster

7.This 66-year old woman presents with this itchy and painful rash. It began on her neck and spread around her trunk. She also had some “soreness in her mouth about that time too”. She has taken hydrochlorothiazide and simvastatin for over 7 years. She has not treated this rash in any way. What is the most appropriate next step?

a. Apply nystatin ointment to affected areas

b. CT scan and lumbar puncture

c. Order silvadene cream to apply twice daily

d. Urgent dermatology consultation*

e. Urgent surgical consultation for debridement

8.This 5-year old girl is brought into the urgent clinic by her parents for this rash. It started 1 day ago and began on her face and trunk. The girl wouldn’t eat because her mouth was sore and now she’s “hot” and lethargic. She normally doesn’t take medicine, but her parents say she has been taking “an antibiotic” for the past 3 days. What is the most likely diagnosis for this patient?

a. Atopic eczema

b. Bullous impetigo

c. Pemphigus vulgaris

d. Stevens Johnson syndrome*

e. Urticaria