disorders like diabetes, hypothyroidism, and hypoparathyroidism. They can also be due to peripheral vascular disease, vitamin B12 deficiency or malnutrition.
Get your blood sugar and thyroid hormones levels evaluated. You can take some vit B12 for some days and see if the crawling is gone or not.
If symptoms persist then get it evaluated from your doctor.
I hope it helps. Take care and regards.