I've been having the exact same issue for well over a year, maybe a year and a half fairly consistently. The issue is it is not always the same, or the same hand/side, sometimes I go a week or more without it happening, other times even after not doing anything that would provoke it goes off.
As I said it's very specific or diverse in location. It's always pins and needles but not exactly the same, less intense but more electric.
sometimes its my thumb, index and thumb side of my middle finger on my left, other times it's pinky side of middle finger ring and pinky. Sometimes both hands, or right or left. BUT always its the same fingers on either side or both sides, never a different set in the same "event". Some nights it wakes me 6 or more times some once or not at all.
Went to a doc about it, and he just gave me a referral to a PT.. After a bunch of google research and paying attention I've learned that it only happens side sleeping and in our bed. After really paying attention to it, and going though "analytics" it started with our "new" mattress, the one we got because my wife was having body pains from our old one. Why it happens to both at once I'm clueless but could be in my neck. IT does seem to get worse or be worse with normal work activities, but the only days I've had it happen while awake was while driving on bid days.