Question 1

A 35-year-old agricultural worker presents with erythema, edema, and stinging on the hands, as shown in the first image. Which type of dermatitis is most likely, and what is the primary pathophysiological mechanism?

Accepted Answer

Irritant contact dermatitis; direct tissue damage from repeated chemical exposure

Question 2

Which occupations are at increased risk for developing irritant contact dermatitis, as depicted in the second and third images?

Accepted Answer

Agriculture, healthcare, and manufacturing

Question 3

A patient presents with a localized, well-demarcated erythematous rash on the wrist, as shown in the fourth image. Which of the following is the most likely cause?

Accepted Answer

Irritant contact dermatitis from direct exposure to a chemical

Question 4

Which product, shown in the fifth image, is recommended for soaking the affected area in irritant contact dermatitis due to its astringent and drying properties?

Accepted Answer

Burow’s solution (5% aluminum acetate)

Question 5

What is a key counseling point for patients using colloidal oatmeal baths, as shown in the sixth image, for dermatitis?

Accepted Answer

It can make the bathtub surface slippery, increasing fall risk

Question 6

For which body areas would a patient most likely prefer to use a body oil (seventh image) rather than an ointment for dermatitis management?

Accepted Answer

Scalp and areas with hair

Question 7

Which of the following is a recommended skin protectant for diaper dermatitis, as shown in the eighth image?

Accepted Answer

Desitin (zinc oxide)

Question 8

Which of the following treatments should be avoided in the management of irritant contact dermatitis, as indicated by the ninth image?

Accepted Answer

Topical corticosteroids and anesthetics

Question 9

A parent brings in their infant with the rash shown in the tenth and eleventh images. What is the most likely diagnosis and primary irritant?

Accepted Answer

Diaper dermatitis; urine and feces

Question 10

Which of the following is a key ingredient in skin protectants for diaper dermatitis, as shown in the twelfth, thirteenth, and fourteenth images?

Accepted Answer

Zinc oxide or petrolatum

Question 11

Why should powders such as cornstarch and talc (fifteenth and seventeenth images) be avoided in the management of diaper dermatitis?

Accepted Answer

They pose an inhalation risk to infants

Question 12

A patient presents with the rash shown in the eighteenth and twentieth images after hiking in the woods. What is the most likely diagnosis and causative agent?

Accepted Answer

Allergic contact dermatitis; urushiol from poison ivy

Question 13

Which of the following products (twenty-second, twenty-third, and twenty-fourth images) can be used to remove urushiol from the skin after exposure to poison ivy?

Accepted Answer

Tecnu, Goop, or dishwashing soap

Question 14

Which topical medication, shown in the twenty-fifth image, is recommended for moderate, isolated allergic contact dermatitis but should not be used on the eyes or eyelids?

Accepted Answer

Hydrocortisone cream

Question 15

A patient with atopic dermatitis is advised to use emollients immediately after bathing. What is the physiological rationale for this recommendation?

Accepted Answer

Emollients trap moisture in the skin, improving barrier function

Question 16

Which of the following is NOT an appropriate self-care recommendation for atopic dermatitis?

Accepted Answer

Use of topical antihistamines

Question 17

A 54-year-old surgical nurse presents with dry, cracked, pruritic hands, worsened by cold weather and frequent handwashing. What is the most likely diagnosis and first-line self-care recommendation?

Accepted Answer

Irritant contact dermatitis; frequent use of emollients and barrier creams

Question 18

Which of the following is an exclusion for self-treatment of dermatitis and requires medical referral?

Accepted Answer

Involvement of mouth, face, eyes, neck, or genitals

Question 19

A patient with atopic dermatitis is using hydrocortisone cream. Which of the following is a correct counseling point?

Accepted Answer

Apply a thin film to dry skin before moisturizers, 1-2 times daily for up to 7 days

Question 20

Which of the following is a common complication of untreated diaper dermatitis, as shown in the images of infants with diaper rash?

Accepted Answer

Development of secondary bacterial or fungal infections

Self-Care and Pathophysiology of Dermatitis: ANP Study Guide

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