Suddenly today I started have a cold, tingling sensation in my lips and hands -- not just my fingers, but the backs of my hands as well. It is similar to the feeling when your arm has fallen asleep then woken back up, but this didn't happen and the feeling has been going on for a few hours now. It was shortly after I took a tramadol, but I have taken them many times and this never happened. No new meds or suppliments recently. Any ideas?