Yes, I have heard of it, it is called Formication.
Not life threatening and cause may be due to side effect of drugs or more commonly an anxiety state.
See your GP who will need a fuller history from you before identifying and treating the cause.
seen doc to day gave co comodel tablets also fifty=50ointment//50% liquid paraffin // 50 percent white soft paraffin ointm ent it says on the label its flammable tried it its like glue tried to shave skin too sticky whay do u think