DIAGNOSE THIS ZEBRA: A DIFFERENTIAL DIAGNOSIS CASE
Diffuse, Splotchy Scalp Hyperpigmentation with Variable Scaling Erythema By Ted Rosen, MD, FAAD CASE HISTORY A 60-year-old African American male presented for evaluation of a rash limited to his scalp, which had been present for approximately five years. The patient complained that the eruption was periodically itchy and scaly, noting that he avoided wearing dark […]
DIAGNOSE THIS ZEBRA: A DIFFERENTIAL DIAGNOSIS CASE
African American with Torso Lesions, History of Spontaneous Keloids By Ted Rosen, MD, FAAD CASE HISTORY A 36-year-old African American male presented for evaluation of lesions involving the anterior torso, extending from the level of the clavicle to the uppermost abdomen, just inferior to the nipple line. He had developed these spontaneous keloids at age […]
DIAGNOSE THIS ZEBRA: A DIFFERENTIAL DIAGNOSIS CASE
Hyperkeratosis and Painful Fissuring on the Soles By Ted Rosen, MD, FAAD CASE HISTORY A 69-year-old postmenopausal obese Caucasian woman of Russian ethnicity presented with the recent onset of thickened skin in the bilateral plantar surfaces. This phenomenon was particularly prominent on the heels and less apparent on the arch of both feet. She was […]
DIAGNOSE THIS ZEBRA
A Dying Penis With Ted Rosen, MD, FAAD CASE HISTORY A 45-year-old Black male with poorly controlled Type 1 diabetes and chronic renal disease presented to the Emergency Department with a three-week history of a gradually expanding and extremely painful penile lesion. On the visual analog scale (VAS), his pain was assessed to be 9 […]
DIAGNOSE THIS ZEBRA: A Differential Diagnosis Case
By Ted Rosen, MD, FAAD and Usman Asad, MD Case History A 59-year-old African American female presented for evaluation of pruritic lesions involving the right neck and left hip. Lesions had been present and solely expanding over the preceding two to three years. Past medical history was significant for pulmonary sarcoidosis for four years. Although […]
Diagnose This Zebra
Intracellular parasite With Ida Orengo, MD, and Ted Rosen, MD, FAAD CASE HISTORY A 41-year-old male from Cuevo, Texas, (about 150 miles southwest of Houston) was referred to our facility for Mohs micrographic surgery to be performed on a squamous cell carcinoma of the left cheek. The lesion in question had arisen three to four […]
Progressive neoplasia
with Michael Wilkerson, MD and Anthony W. Linfante, MD Case History A 58-year-old indigent with known untreated hypertension and a remote history of cocaine abuse presented to a free medical-student/resident-run clinic with large, neglected basal cell carcinomas of the cheek and forehead (Figure 1). As a first effort at control, he was placed on vismodegib […]
Diagnose this Zebra
Exophytic perianal nodule With Anthony W. Linfante, MD, and Brent Kelly, MD CASE HISTORY A 52-year-old male Pacific Islander presented to the dermatology consult service with a 2-year history of a very slowly growing pigmented, exophytic perianal mass of about 2cm in diameter (Figure 1). The lesion was neither painful nor pruritic but did occasionally […]
Diagnose this zebra: a bullous eruption in a middle-aged man
Matthew J. Zirwas, MD, with Cheryl Guttman Krader Matthew J. Zirwas, MD Director, Ohio Contact Dermatitis Center Columbus, OhioMember, North American Contact Dermatitis Group CASE HISTORY A 40-year-old white man presented with a 2-week history of widespread blisters. Clinical examination showed tense, subepidermal-appearing bullae on mildly erythematous bases (Figure 1). Palms, soles, scalp, and mucous […]
Exophytic nodule following trauma
Frank Winsett, MD, Caroline Crain, MD, Janice Wilson, MD, Kathleen Kroger, MD CASE HISTORY An 82-year-old man who was admitted for newly diagnosed pancytopenia secondary to myelodysplastic syndrome (MDS) presented to the dermatology consult service with a persistent growth on the lateral aspect of the right elbow. He reported bumping his elbow on a piece […]