Pins and needles in thumb/index finger
I have been experiencing sporadic pins and needles/tingling in the thumb and sometimes index finger of my right hand for the past few weeks although it has become much more common over the past week.
The tingling usually starts in the thumb before sometimes spreading to the index finger and down the thumb towards the wrist. Shaking my arm about or moving my hand about usually stops the tingling; if the tingling persists the end of my thumb often becomes numb.
Most of the time the pins and needles occur when i am NOT using my hands/wrists/fingers. I had originally blamed spending too much time at the computer but the times when i have tingling is usually when my hand is off the mouse/keyboard and resting on my lap or to the side rather than when i am actually using the mouse/keyboard.
Sitting with my hands on my lap/legs often causes the tingling to start- the last couple of times i have been a passenger in a car the tingling seems to start every couple of mintues and it is difficult to find a position that doesnt cause the tingling to keep coming back. Lying face down on a bed to read will rapidly cause tingling in right thumb/finger.
Using a video game controller tends to trigger tingling. However, I know video gaming isn't the cause as I hadn't played video games for at least two months before the problem started and I have only started to play in the last couple of days. The normal position I am in for gaming- sitting with arms down at approx right angles, forearms on/slightly above upper legs with hands on or above lap -is more or less the same position that causes tingling when i am in a chair, in the car etc so i suspect this is the cause of the tingling rather than the use of thumbs or fingers.
Activites in the last couple of days involving the use of my wrists/fingers- gardening, hedge trimming, mowing, coarse fishing, throwing ball- do NOT appear to trigger pins and needles unless I happen to find myself in one of the aforementioend positions.
I have no tingling when i go to bed at night (i lie on my back) and there is no tingling when i wake up in the morning.
I'd be grateful for any advice- thanks.