Sewer

You should definitely just wait it out, and not tell anybody about it.

kidding... Numbness can be a blood flow issue, so it could be from the e-cigs - caffeine might cause the same thing. The only way to know for sure is... well... what everybody else said.

People should get a physical once a year, most doctors do.

GO SEE A DR- not from vaping

I get numbing in my arms and hands, but I had that long before I started vaping.

i second the see a doctor post, what you are describing could have many causes

i have had something similar to this issue but not while using ecigs.
the problem came from trying to be more healthy so i was drinking a LOT of water. i did go see a dr and she told me i'm flooding my system. not that this could be your issue but was mine.
also, maybe what is happening is the tar is getting broke down in your system and sort of collecting up in the smaller areas of constricted blood flow.
hit the dr and see if there is something they can look into and also check into the other probabilities of it not being ecig related.

also if you are doing mainly vg try switching to pg or pg to vg and see if that has any different effects.

Sewer, Iam NOT seasoned user, but IMHO I would seek medical attention very soon. I have not heard of this being a side effect of the ecig, but regardless of the possible causes I'm concerned for you. Please see a DR and keep us informed. Good luck and take care of yourself.