I think what you have are paresthesias.

This symptom can be confused with neuropathies.

Here is an explanation....many things cause these feelings.
And it would be different for everyone.
http://en.wikipedia.org/wiki/Paresthesia

Since you have migraines, I'd look to a vascular solution.
This would be fish oil daily (3 regular ones) and a good magnesium supplement (avoid Oxide form).

Twitching of the face and eyelids esp, can be stopped with fish oil.
In fact the Basel drug company did a study on this using Omega-6 and Omega-3 from flax oil.
http://www.ncbi.nlm.nih.gov/pubmed/10754430
Since in rats Omega-6 is more important than to humans, I'd leave off the Linoleic acid. Do the fish oil and some flax oil, and see what happens.

If you are taking an antidepressant, an SSRI ? This can cause facial muscle twitching, and also involve the neck. This is because when chronically used SSRIs somehow reduce dopamine and this reduction affects muscles resulting in twitching. It is most common on the face, tongue and neck.

Spells of LOW blood sugar also cause paresthesias, and twitching. So keeping journal to pinpoint when they occur and how long they last would be helpful. If they go away after eating...that would be revealing.