pins and needles 
plural noun [treated as singular]
A tingling sensation in a limb recovering from numbness.I have received quite a few letters from people suffering from restless legs, pins and needles and other tingling sensations which have not been found to be caused by anything in particular....
- She climbed on his back and lay there, felt the surface beneath start to prick like pins and needles in the rising warmth.
- These symptoms consist mainly of tingling, numbness, a sensation of pins and needles in the extremities, and muscle aches.
Phrases
on pins and needles