See a doctor.
I don't think internet forums are the place for medical advice.
I wouldn't call it medical advice ... think of it as tribal witchdoctorisms ... I think the main thrust of these things is that people realise their "mates" are not trained medical professionals, but have had similar issues, complaints, Sandy Vags, etc and are asking for their opinions.
It recognises that there will be a high chance of trial and error, but also that somebody may have had a similar issue and forked out their bike savings to visit their Specialist or 3 (all of which said different things) and maybe able to cut through some of the crap when they take their turn to annoy Doctor House MD.
Some people don't like going to doctors and would rather gut it out rightly or wrongly ... telling them not to post shit on a forum won't change that. Maybe we can learn from their Misery
BOT: Increasing Circulation ...
I suggest Leaches ... couple of skinnies on your heal and arch ... maybe whilst doing a hand/head stand or other inverting thingy.
Are you a smoker Fairy ? decreased circulation at the extremities is one of the consequences.
Do your fingers also freeze ... your body naturally redirects blood flow to the important organs when it is cold ... maybe you should be putting more layers on your core body parts ... and your noggin ... to see if that does anything for your feet (grasping)
I vote for the leaches ... and take pics