“It is just that blood fails to reach your foot” is a common medical myth which is purely wrong. Everyone of us feel this very often when we stay in the same position for a long time mostly cross-legged position. The foot feels heavy. The cause lies in your nerve which gets compressed. A blocked vessel in an area will turn it pale. Try it by tying a rubber band to your finger, it turns pale right? So, the argument about a blocked vessel in foot is fully null and void.
PARESTHESIA is how we describe this feeling.
Nerves carry signals back and forth between the brain and body. Think of a pipe that you were using to water plants and you squashed it with your feet, now the water couldn’t flow further. Similarly, when a nerve is compressed, it can’t relay the signal further to brain resulting in a numb and tingly foot.
But, upon some sudden movement the foot “wakes up” meaning it starts to fire signals again often all at once. The collection of signals being fired altogether is what produces intense ticklish feeling.
Sometimes it is harmless sometimes it isn’t.
If the feeling remains even after moving then there could be an underlying cause, like a spinal nerve compression or if you’re diabetic- a nerve damage is possible. In such cases you should see a doctor.
MBH/PS