Hi acouchy, welcome to the forums!
There have been loads of threads about this subject here, which is of particular interest to me because neuropathic pain/allodynia/"the itching" is a central symptom for me, and I've found that tackling that symptom has led to significant improvements in all my other symptoms.
The most recent thread on the subject is here:
http://forums.phoenixrising.me/showthread.php?16188
One word of caution: although the sensation of "tiny bugs crawling all over you" is a very accurate description of what it
felt like for me, particularly at onset (the sensation, I find, does vary, including also burning and stabbing pains, depending on my current state of sensitivity), this is probably not a wise description to mention to doctors - it might put them in mind of "delusional parasitosis", which is the standard way of dismissing this condition as psychosomatic.
My latest hypothesis for an explanation of this condition is damage to the recently-discovered
tight junctions, which form a very thin protective layer beneath the skin, inside the gut (perhaps causing leaky gut) and in the blood-brain barrier (hence this damage might also explain digestive and cognitive impairments). Some viruses also subvert the receptors of tight junctions causing long-term damage to them, which might explain why many people get ME/CFS following a viral or bacterial infection.
My main practical advice is to identify the environmental factors which provoke or worsen your sensitivity, and to focus (perhaps necessarily in an extreme way) on eliminating them. For me, 100% high-quality cotton clothes are essential, I sleep on a leather sofa (haven't slept in a bed for years), and I use washing balls (no washing powders) and environmentally friendly washing up liquid and soaps (much experimentation was required with products like that).
Finally, I have noticed over the years that what I eat, and the state of my digestion, is closely linked with my overall sensitivity - if my gut is exposed to foods I'm sensitive to then my skin is more sensitised, and vice-versa. If you also have digestion issues, then this would probably be an important area to focus on. A careful elimination diet and close observation is probably essential to identify one's sensitivities; pretty much anything except steak, potatoes and peas can set me off, and wheat/gluten and eggs are particularly bad; I had to stick to a restricted diet and lots of supplementation (B12, Co-Q10, Omega-3, etc) for a long time, but I can now eat pretty much everything so long as I don't overdo it and return to my core diet when I become more sensitive.
So...that's what helped for me, and obviously (as always) your mileage will probably vary...but hopefully there's something there that helps you. I wish you the best of luck: it's a horribly frustrating form of pain, but in my experience at least, it can be reduced significantly with a lot of trial and error and careful observation of the triggers.