Finger discoloration may result from recognized conditions affecting upper
limb vasculature. We describe 11 patients who presented with acute pain, sw
elling and blue/purple discoloration in a finger. This benign condition mim
icked digital ischaemia. There were 9 women and 2 men. The episode usually
started with an ache/pain in the finger followed 2-3 h later by a blue/purp
le discoloration primarily on the volar aspect but always sparing the tip.
This completely resolved after 4-7 days with no residual deficit. There was
no history of trauma. Four patients had had previous episodes - 2 had been
started on warfarin. There was no family history and only one gave a histo
ry of spontaneous bruising of her legs. Examination of all patients - pulse
rate, blood pressure, cardiac and subclavian artery auscultation and digit
al artery Doppler insonation - was normal. All patients had normal full blo
od counts, CRP, vasculitis screen and clotting (except those on warfarin).
Six similar cases, all women, were reported in 1982. There was no common ae
tiological factor other than sex. Although of no prognostic significance, t
he condition is likely to concern patients and doctors in primary care. The
discoloration is, however, clearly of a different distribution to that in
an ischaemic finger where the tip of the digit is involved.