Needles in the hands?

When I got to work this morning, my hands started itching, and then stinging like little needles were stabbing them—but not the vague, numb, “pins and needles” of poor circulation. It was really uncomfortable. It lasted maybe 8 minutes, then began to fade. This has happened once before, a couple months ago. Is this something I should be concerned about? Neurological? I’ve had an MRI recently (July), because of an unrelated problem, and no one noticed anything out of the ordinary.