Yellow papules near the nipple
A woman presents with papules on the areola that had been enlarging for several months. A man presents with protuberant papules with a red, yellow and whitish hue. Can you differentiate between the two?
All articles by By Noah S. Scheinfeld, MD, JD
Growths on the fingers
Two patients present with growths on the fingers. The first patient, black woman aged 45 years, presents with papules on the outside of her pinkies that had been present since birth, had not grown and did not bother her. The second, is a man aged 40 years with a six-month history of a growth on the side of one middle finger. Can you differentiate between the two?
Vascular nodules and papules
Two patients present with red lesions. A white infant aged 4 months presented with a three-month history of a red, verrucous nodule on his scalp, that grew from a small papule to a 3-cm nodule. A white man aged 50 years who had developed red papules on his legs, arms, chest and abdomen 20 years earlier, noticed that a group of the papules grew together to form a plaque. Can you differentiate between these two patients’ lesions?
Infants with hypopigmented processes
Two patients present with similar hyperpigmented spots on the skin — one with a series of macules on the cheek, and the other with lesions on his back.
Purple eruptions
Two patients with purple lesions and no other abnormal skin findings.
Coalescing purpuric plaques
Can you distinguish between two purpuric plaques on patients’ legs?
A pair of generalized red rashes
Two men present with red rashes—one started on the back and spread to the upper arms, and the other was limited to the chest.
Facial plaques in aging men
Two aging men develop similar-appearing asymptomatic facial plaques.
Discrete areas of hair loss
A 40-year-old woman and a 3-year-old boy experience similar patterns of hair loss—one of sudden onset and the other present at birth.
Axillary papules and plaques
Differentiating two similar-appearing cases of axillary papules and plaques
