Allergic Contact Dermatitis in a Young Adult: Krista Hampton
NURS 5308 iHuman Simulation
SECTION 1: INITIAL ASSESSMENT & CLINICAL REASONING (Questions 1–15)
1. What is the most appropriate initial question to ask Krista about her rash?
A) "Have you ever had a rash like this before?"
B) "Do you have a family history of skin cancer?"
C) "What medications are you currently taking?"
D) "Have you had any recent blood transfusions?"
Answer: A
Rationale: Asking about prior similar rashes helps determine if this is a recurrent
issue (suggesting chronic sensitivity) or a first-time exposure.
2. Krista's rash is pruritic. What does this term mean?
A) Painful to touch
B) Warm to palpation
C) Itchy
D) Blistering
Answer: C
Rationale: Pruritic means itchy, which is a hallmark symptom of allergic contact
dermatitis.
3. Which vital sign finding in Krista would be most concerning and suggest
systemic involvement?
A) BP 116/62 mmHg
B) HR 76 bpm
C) Temperature 101.2°F (38.4°C)
D) Respiratory rate 12/min
,Answer: C
Rationale: Fever suggests possible secondary infection or systemic allergic
reaction. Krista was afebrile, which is consistent with localized contact dermatitis.
4. Krista reports the rash started 36 hours after hiking. This timing is most
consistent with:
A) Immediate hypersensitivity reaction
B) Delayed hypersensitivity reaction
C) Anaphylactic reaction
D) Cytotoxic reaction
Answer: B
Rationale: Type IV delayed hypersensitivity reactions typically appear 24–72
hours after allergen exposure.
5. The nurse notes that Krista's rash has a linear pattern on her forearm. This
finding is most suggestive of:
A) A food allergy
B) A medication reaction
C) Contact with a plant (e.g., poison ivy)
D) A viral exanthem
Answer: C
Rationale: Linear streaking occurs when the skin brushes against a plant stem or
leaf containing urushiol oil.
6. When assessing Krista's rash, which characteristic would be most consistent
with allergic contact dermatitis rather than irritant contact dermatitis?
A) Immediate onset after exposure
B) Vesicles in a linear pattern appearing 24–72 hours later
C) Pain rather than itching
D) Involvement of only the hands
,Answer: B
Rationale: Allergic contact dermatitis has delayed onset (24–72 hours) and often
presents with vesicles in a pattern matching exposure.
7. Krista denies any fever, chills, or malaise. This suggests:
A) The rash is likely infectious
B) The condition is localized without systemic involvement
C) She may be immunocompromised
D) The rash is psychosomatic
Answer: B
Rationale: Absence of systemic symptoms supports a localized dermatologic
condition rather than a systemic infection.
8. Which exposure during Krista's trip is most likely the cause of her rash?
A) Scallops (new food)
B) Hot tub chemicals
C) Hiking through vegetation
D) New sunscreen
Answer: C
Rationale: The linear pattern of vesicles on her forearm strongly suggests
brushing against poison ivy or oak during hiking.
9. What is the medical term for the oil found in poison ivy that causes allergic
contact dermatitis?
A) Histamine
B) Urushiol
C) Melatonin
D) Serotonin
Answer: B
Rationale: Urushiol is the allergenic oil found in poison ivy, poison oak, and
poison sumac.
, 10. Approximately what percentage of the population is sensitized to urushiol?
A) 25%
B) 50%
C) 70%
D) 85%
Answer: D
Rationale: Approximately 85% of people develop an allergic reaction to urushiol
after sufficient exposure.
11. Why didn't Krista's boyfriend develop the same rash?
A) He did not go on the hike
B) He is not sensitized to urushiol
C) He took antihistamines before the hike
D) He wore long sleeves
Answer: B
Rationale: Only individuals who have been previously sensitized to urushiol
develop the reaction.
12. Krista's rash is described as having vesicles. What are vesicles?
A) Solid, raised lesions
B) Fluid-filled blisters less than 1 cm in diameter
C) Flat, discolored spots
D) Thickened, scaly plaques
Answer: B
Rationale: Vesicles are small (less than 1 cm) fluid-filled blisters, characteristic of
allergic contact dermatitis.
13. The nurse notes that Krista's rash is in various stages of development. This is
characteristic of:
NURS 5308 iHuman Simulation
SECTION 1: INITIAL ASSESSMENT & CLINICAL REASONING (Questions 1–15)
1. What is the most appropriate initial question to ask Krista about her rash?
A) "Have you ever had a rash like this before?"
B) "Do you have a family history of skin cancer?"
C) "What medications are you currently taking?"
D) "Have you had any recent blood transfusions?"
Answer: A
Rationale: Asking about prior similar rashes helps determine if this is a recurrent
issue (suggesting chronic sensitivity) or a first-time exposure.
2. Krista's rash is pruritic. What does this term mean?
A) Painful to touch
B) Warm to palpation
C) Itchy
D) Blistering
Answer: C
Rationale: Pruritic means itchy, which is a hallmark symptom of allergic contact
dermatitis.
3. Which vital sign finding in Krista would be most concerning and suggest
systemic involvement?
A) BP 116/62 mmHg
B) HR 76 bpm
C) Temperature 101.2°F (38.4°C)
D) Respiratory rate 12/min
,Answer: C
Rationale: Fever suggests possible secondary infection or systemic allergic
reaction. Krista was afebrile, which is consistent with localized contact dermatitis.
4. Krista reports the rash started 36 hours after hiking. This timing is most
consistent with:
A) Immediate hypersensitivity reaction
B) Delayed hypersensitivity reaction
C) Anaphylactic reaction
D) Cytotoxic reaction
Answer: B
Rationale: Type IV delayed hypersensitivity reactions typically appear 24–72
hours after allergen exposure.
5. The nurse notes that Krista's rash has a linear pattern on her forearm. This
finding is most suggestive of:
A) A food allergy
B) A medication reaction
C) Contact with a plant (e.g., poison ivy)
D) A viral exanthem
Answer: C
Rationale: Linear streaking occurs when the skin brushes against a plant stem or
leaf containing urushiol oil.
6. When assessing Krista's rash, which characteristic would be most consistent
with allergic contact dermatitis rather than irritant contact dermatitis?
A) Immediate onset after exposure
B) Vesicles in a linear pattern appearing 24–72 hours later
C) Pain rather than itching
D) Involvement of only the hands
,Answer: B
Rationale: Allergic contact dermatitis has delayed onset (24–72 hours) and often
presents with vesicles in a pattern matching exposure.
7. Krista denies any fever, chills, or malaise. This suggests:
A) The rash is likely infectious
B) The condition is localized without systemic involvement
C) She may be immunocompromised
D) The rash is psychosomatic
Answer: B
Rationale: Absence of systemic symptoms supports a localized dermatologic
condition rather than a systemic infection.
8. Which exposure during Krista's trip is most likely the cause of her rash?
A) Scallops (new food)
B) Hot tub chemicals
C) Hiking through vegetation
D) New sunscreen
Answer: C
Rationale: The linear pattern of vesicles on her forearm strongly suggests
brushing against poison ivy or oak during hiking.
9. What is the medical term for the oil found in poison ivy that causes allergic
contact dermatitis?
A) Histamine
B) Urushiol
C) Melatonin
D) Serotonin
Answer: B
Rationale: Urushiol is the allergenic oil found in poison ivy, poison oak, and
poison sumac.
, 10. Approximately what percentage of the population is sensitized to urushiol?
A) 25%
B) 50%
C) 70%
D) 85%
Answer: D
Rationale: Approximately 85% of people develop an allergic reaction to urushiol
after sufficient exposure.
11. Why didn't Krista's boyfriend develop the same rash?
A) He did not go on the hike
B) He is not sensitized to urushiol
C) He took antihistamines before the hike
D) He wore long sleeves
Answer: B
Rationale: Only individuals who have been previously sensitized to urushiol
develop the reaction.
12. Krista's rash is described as having vesicles. What are vesicles?
A) Solid, raised lesions
B) Fluid-filled blisters less than 1 cm in diameter
C) Flat, discolored spots
D) Thickened, scaly plaques
Answer: B
Rationale: Vesicles are small (less than 1 cm) fluid-filled blisters, characteristic of
allergic contact dermatitis.
13. The nurse notes that Krista's rash is in various stages of development. This is
characteristic of:
