A word for this cramp-like sensation

The sensation is commonly referred to as pins and needles:

a tingling sensation in a limb recovering from numbness.

The medical term is paraesthesia:

Paresthesia (/ˌpærɨsˈθiːziə/ or /ˌpærɨsˈθiːʒə/), spelled paraesthesia in British English, is a sensation of tickling, tingling, burning, pricking, or numbness of a person's skin with no apparent long-term physical effect. It is more generally known as the feeling of "pins and needles" or of a limb "falling asleep".

if you put pressure on a nerve the signals get blocked, when the pressure is gone the signals start again.
when the nerves are blocked your limb is 'asleep' when it becomes unblocked you say 'my (insert affected limb here) fell asleep.'
the tingle is referred to as 'pins and needles' which doesn't make sense to me 'cause it is not painful like real pins and needles. the tingle is your brain recalibrating your limb like a computer running a diagnostic program on its self.