PMC5343251_01
Subungual hyperkeratosis and a round reddish area in the middle of the nail plate.
CRIDM2017-3613109.001.jpg
PMC5343251_01_CRIDM2017-3613109.001.jpg
fig1
Dermatological examination showed a distal onycholysis with subungual hyperkeratosis and a round reddish area in the middle of the nail plate (Figure 1).
Suprabasal acantholytic and dyskeratotic keratinocytes (H-E x10).
CRIDM2017-3613109.002.jpg
PMC5343251_01_CRIDM2017-3613109.002.jpg
fig2
The histologic features showed acantholytic phenomenon in the epidermis, dyskeratotic keratinocytes, hyperkeratosis, and bone of the distal phalanx (Figure 2).