Diagnosis & Disease Information

Derm Dx: Symmetrical pink papules on the cheeks, arms and legs

A 3-year-old male presents with an eruption of pink papules on the cheeks, arms and legs that has been present for four days. The boy’s mother reports he has not been scratching the lesions. Both the patient and his older sister had a recent cold, but the older sister does not have a rash. The…

Derm Dx: Asymptomatic eruption between the shoulders

A 16-year-old black female presents complaining of an eruption between her shoulder blades. She is not sure when the eruption first appeared, but her mother complains that it is unsightly. The patient denies pain or itch in the affected area. She also denies any prior past medical history or medication use. She reports that her…

Derm Dx: Bright pink malar rash

A 5-year-old girl presents with a rash on her cheeks that has been present for one day. The girl’s mother reported that the rash appeared quite suddenly. The patient is otherwise well, without fevers, upper-respiratory symptoms, arthralgias or malaise. A complete review of symptoms is negative. The girl has no sick contacts or history of…

Derm Dx: Red plaque with ulceration

A 3-month-old infant presents with a lesion on the scalp that her parents are concerned about. At birth, there was only a very small bruise-like lesion on the scalp that the girl’s pediatrician thought may have been due to trauma from delivery. At three weeks of age, the “bruise” developed into a pink patch and…

Derm Dx: Flat-topped, slightly violaceous papules

A 50-year-old otherwise healthy black male presents complaining of itchy papules that have been present for several months. He denies any preceding illnesses or medication changes. Besides extreme pruritis, his review of symptoms is negative. Past medical history is unremarkable. Family history is noncontributory. He was seen recently at an urgent care clinic and prescribed…

Derm Dx: Itchy pink patches

A 38-year-old man presents complaining of itchy red patches on his back that have been present for months. His primary medical doctor initially prescribed clotrimazole antifungal cream for tinea corporis. When the lesions did not improve, the patient was given triamcinolone topical corticosteroid cream to treat a presumed eczema. The triamcinolone relieved the itchy sensation,…

Derm Dx: Papules on the penis

A 24-year-old man presents complaining of “bumps” located on the shaft of his penis. He is not sure how long the bumps have been present and denies itch or other discomfort. The patient is otherwise healthy and not taking any medications. He is sexually active with women and has had two partners in the past…

Derm Dx: Scaly patches after a throat infection

A 6-year-old Hispanic girl was brought by her mother to the dermatology clinic with a two-week history of a scaly rash. According to the mother, the child had a throat infection two weeks prior to developing the rash. The rash was mildly pruritic, but the girl was otherwise asymptomatic. Physical examination revealed the presence of…

Derm Dx: Recurrent, ulcerating, perforating lesion on the nose

At the insistence of her daughter, a 72-year-old woman sought treatment for a deep nasal ulceration that had perforated the skin and cartilage and exposed her nasal septum. The lesion occasionally bled but otherwise caused minimal symptoms. The patient wore a large bandage whenever she was in public. Years earlier, she had had a nasal…

Derm Dx: Itchy, light-brown patches in the groin

A 65-year-old obese male with a history of hypertension and hyperlipidemia complains of light-brown patches, accompanied by itching in the groin that has been present for four months. The patient’s current medications include atorvastatin (Lipitor) and hydrochlorothiazide. He lives by himself and reports drinking about four beers a day. He has not had sexual relations…

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