(a)
(b)
(c)
Figure 1: Swelling with redness of the distal interphalangeal (DIP) joints of the left (a) and right (b) hand. Predominantly the right index and left little finger are affected. Psoriatic nail changes with oil drops and distal onycholysis occurred on almost all fingernails. (c) Close-up view of DIP on the right hand.