I had tingling daily for months - it's just started to abate this month. It started in my left foot, then progressed to my left leg, both legs, then to my arms and even my waist on the right side. It was sort of a prickly tingling feeling. I also noticed that my left foot would fall asleep really easy when sitting certain ways. I was so sure it was something really serious. I went to my doctor and my therapist both of whom assured me that it was anxiety. The thing that proved it to me was that I went on a yoga weekend (all by myself, no responsibilities) and the tingling was gone the entire weekend. Within a day or so of coming home (to all of my responsibilities, stress) my tingling came back. Obviously MS symptoms don't come and go like that just because you're relaxed. Now that I've accepted this, after 3-4 months of tingling, my tingling is waning to the point where several days a week I don't feel it at all. I feel so silly for having wasted so much time worrying.
Here's one thing I know about MS - it generally presents in one spot or area. It could be one sided like sixpack mentioned. The caution with that is that you'll find that anxiety symptoms, for some reason, often present on one side more than the other - most often the left side though I'm not sure why. But sometimes it's both feet or the same spot on both legs. The reason for this is that the demyelination that occurs with MS usually starts on one nerve/area. So the fact that you have it in hands & feet makes MS very unlikely - obviously your hands and feet are not innervated by the same nerves. Also, usually, if you have parasthesia (which is what tingling is) you also have other more pronounced symptoms. People with MS may end up with more widespread tingling/numbness but this is usually after living with the disease for many years
(during which many more nerves demyelinate and thus the numbers of tingling/numb spots increase).
Finally, I know when I was going through this part of what I had a problem with is that there are very few reputable websites that list tingling as a symptom of anxiety. I mentioned this to my therapist recently and he was shocked. He said tingling/prickling/other paresthesia sensations are one of the most common symptoms he sees in his patients with anxiety. My primary care physician, who has been practicing for many, many years, said the same thing - she's got tons of patients that experience tingling because of anxiety. Especially in their hands/feet/face - she told me those are the most common locations (honest!) And I know that my mother who has suffered from anxiety for 35 years also has experienced parasthesia for years. Hers is a perceived numbness rather than tingling, often in her left arm or elsewhere on her left side. She started experiencing it in her early 30's and it's never progressed into MS or any other disease. In fact in her late 50s she had an MRI for a different reason and her brain looked perfect!
I hope this reassures you somewhat. I know it's hard to believe that anxiety can do this to you. I was so sure I had something else wrong with me, but I don't. Shocking - but true!