An erythematous flag on the fingers
An unusual rash over a patient’s proximal interphalangeal joints raises suspicion
Viola is a 71-year-old Caucasian woman who presents to her GP for a routine iron infusion for recurrent iron deficiency.
At review prior to the procedure, Viola’s GP incidentally notices a rash on the proximal interphalangeal joints of the fourth and fifth digits of her right hand (see figure 1).
