Dermclinic

A 45-year-old man presents with a 4- to 5-year history of an intermittent, asymptomatic, red, circular rash on his trunk. Trials of antifungal creams have not been successful. The patient is otherwise healthy and takes no medications.

During a routine skin examination, a papule of several years’ duration is noted on the upper lip of a 71-yearold man. The patient states that the lesion has been slowly enlarging; it does not bleed even during shaving.

A 33-year-old woman presents with an asymptomatic facial rash for which she has been using mometasone cream regularly. Initially, she had a small patch of acne on one cheek that quickly cleared with this cream. However, the rash has been worsening for the past year.

For several months, a 51-year-old African American woman has had an asymptomatic erythematous papule on the nose. She is otherwise healthy.

A pruritic rash under the left breast has bothered a 67-year-old woman for the past month. She takes an antihypertensive and is otherwise healthy.

For several weeks, a 33-year-old man has had an asymptomatic lesion on the head of the penis. He has had a new sex partner in the past few months but is unaware of any health problems she may have. What is the likely cause of this lesion?

A 35-year-old man presents with a scaling rash on the penis of several weeks’ duration. Which of the following would you include in the differential?

Is this penile rash the result of lichen planus? Candidiasis? A dermatophyte infection? Seborrhea? Psoriasis? Click here for the answer.

For 2 months, a 27-year-old man has had this worsening rash on the head of the penis. He denies any history of trauma. What do you suspect?

Case 4: An obese 59-year-old man presents with a chronic malodorous, itchy rash in his groin.

A 33-year-old woman seeks medical attention because of a burning and itchy vulvar rash. She is not immunocompromised.

For a few months, a 27-year-old man has had an itchy rash in the groin area. He tried an over-the-counter “jock itch” remedy, but it was not effective. He is otherwise healthy. Which of the following would you include in the differential diagnosis?

A 28-year-old man presents for evaluation of a nonresolving rash in his groin. The rash has persisted despite the patient’s use of over-the-counter antifungal creams. What do you suspect?

This abdominal rash developed while a 63-year-old woman was traveling in Israel. She was admitted to the hospital, where she received intravenous antibiotics, and was discharged after 5 days. She now returns to the United States and wonders what she had, because she did not understand what the physician in Israel had told her. She has brought all of her medical records.

For 10 days, a 42-year-old woman has had this asymptomatic eruption on her trunk and proximal extremities. She is otherwise healthy.