Common Conditions in Persons with Skin of Color
Match the diagnosis to the photo by letter
a. Pseudofolliculitis
b. Keloids
c. Dermatosis papulosa nigra
d. Acne keloidalis nuchae
For answers, see next issue; for discussion, go to www.mdedge.com/clinicianreviews/picture
Photo and case text credits: Case 1: 2009/Elsevier.
Case 2 courtesy of Richard P. Usatine, MD; from Usatine R, Smith M, Mayeaux EJ, et al, eds. Color Atlas of Family Medicine. 2nd ed. New York, NY: McGraw-Hill; 2013:551-556. To learn more about the Color Atlas of Family Medicine, see: www.amazon.com/Color-Family-Medicine-Richard-Usatine/dp/0071769641/. You can now get the second edition of the Color Atlas of Family Medicine as an app by clicking on this link: usatinemedia.com.
Case 3 adapted from J Fam Pract. 2014;63:739-740.
Case 4 reprinted with permission from Cosmetic Dermatology. 2012;25:318-325. ©2012, Frontline Medical Communications Inc.
Answers to last month’s “Picture This” (Clinician Reviews. 2017;27[5]:45): Figure 1b, Figure 2d, Figure 3c , Figure 4a
3. A 15-year-old African-American boy presents with a two-month history of hair loss and pruritic papules on the back of his head that developed after a barber shaved the area. There are two dozen 1- to 2-mm papules on his posterior neck and occipital scalp with areas of focal crusting. The patient had a similar episode a year ago after shaving the same area, but those papules cleared after one month of applying rubbing alcohol.
Diagnosis: This patient’s diagnosis is acne keloidalis nuchae (AKN), a chronic folliculitis characterized by smooth, dome-shaped papules on the posterior scalp and neck that become confluent and form firm papules and hairless, keloid-like plaques. Seen almost exclusively in young, postpubescent African-American males, the condition is often asymptomatic, although some patients complain of itching in the affected area.
For more information, see “Scalp papules in a teenage boy.” J Fam Pract. 2017 March;66(3).
