Editing Raynaud's phenomenon (section)

=== '''Clinical findings''' ===

* Typically, attacks of pallor involving part or all of one or many fingers, brought on by cold exposure with full and rapid recovery on rewarming of the digits
* Episodes self-limited, lasting 10-20 minutes
* Thumbs are frequently spared - if involved, suggests secondary Raynaud's
* Can involve toes too
* Can occur several times a day to several times a week
* Pain is not usually a feature of the pallor or cyanotic phase - patients with secondary RP are more likely to complain of digital pain on rewarming
* Examination
** Signs of autoimmune disease - skin thinning/tightening, sclerodactyly, telangiectasis
** Ulceration or hyperkeratotic areas on fingers suggesting healed ulceration
** Splinter haemorrhages 
** Pulse evaluation including Allen test