2025| All Questions with Correct Answers
A 25-year-old male presents to urgent care complaining of genital pruritus. On physical exam,
the patient has small, erythematous, excoriated papules in his pubic hair. No mites are identified.
There is no penile discharge, and the patient has no constitutional symptoms. He is sexually
active but wears condoms during all sexual experiences. What is the most likely diagnosis?
A) Scabies
B) Pubic lice (pediculosis pubis)
C) Herpes simplex virus (HSV)
D) Contact dermatitis
Correct Answer: B) Pubic lice (pediculosis pubis)
Explanation: Small, erythematous, excoriated papules in the pubic hair with intense pruritus,
without mites or constitutional symptoms, are characteristic of pubic lice (crabs). Condom use
does not prevent transmission, as lice are spread via skin-to-skin contact or fomites. Scabies
typically shows burrows, HSV presents with vesicles, and contact dermatitis is less localized to
pubic hair.
Which of the following patients does not have an increased risk of candida infection?
A) A 45-year-old with uncontrolled diabetes mellitus
B) A 30-year-old on long-term antibiotics
C) A 50-year-old with a recent course of corticosteroids
D) A 25-year-old with no medical history on a balanced diet
Correct Answer: D) A 25-year-old with no medical history on a balanced diet
Explanation: Risk factors for candida infections include diabetes (impaired immunity), long-
term antibiotics (disrupting normal flora), and corticosteroids (immunosuppression). A healthy
25-year-old with no medical history or predisposing factors has no increased risk.
, A 22-year-old college student presents to the urgent care clinic complaining of a rash. She was
recently on spring break and spent every night in the hot tub at her hotel. On physical exam, she
has multiple small areas of 1- to 2-mm erythematous pustules that are present mostly where her
bathing suit covered her buttocks. What is the most likely pathogen causing these lesions?
A) Staphylococcus aureus
B) Pseudomonas aeruginosa
C) Streptococcus pyogenes
D) Candida albicans
Correct Answer: B) Pseudomonas aeruginosa
Explanation: Hot tub folliculitis, characterized by erythematous pustules in areas covered by a
bathing suit, is commonly caused by Pseudomonas aeruginosa, which thrives in warm, moist
environments like hot tubs. Staphylococcus or Streptococcus cause different skin infections, and
Candida typically presents with erythematous patches.
A rash that looks like the patient was slapped on the cheeks of the face is the hallmark
characteristic for which disease?
A) Measles
B) Fifth disease (erythema infectiosum)
C) Roseola
D) Scarlet fever
Correct Answer: B) Fifth disease (erythema infectiosum)
Explanation: Fifth disease, caused by parvovirus B19, is characterized by a “slapped cheek”
rash on the face, followed by a lacy, reticular rash on the trunk and extremities. Measles presents
with a maculopapular rash, roseola with a trunk rash, and scarlet fever with a sandpaper-like
rash.
A 3-year-old patient presents to the office with her mother. She has recently started in day care.
Her mother noted slight perioral erythema on the right side of the patient’s mouth last night
before bed. The patient awoke today with 3 small, superficial, honey-colored vesicles in the
location of the erythema. The patient has surrounding erythema presently. She had no difficulty
eating this morning and is active and energetic and does not appear lethargic or fatigued. She is
afebrile. How would you treat this child?
A) Oral acyclovir