Have a 55 y/o WF with intermittent sudden onset of painful swelling and discoloration of vein in one finger of either hand, not related to any particular activities, no trauma. Denies h/o RA, never dx d with Raynauds. Pain, swelling, discoloration can last from 30 minutes to two hours, resolving on own. Has only + h/o migraines, rosacea and venous lake of lip, otherwise healthy. Taking statin and synthroid only. Any diagnosis?