so I'll try not to repeat too much.
At the beginning I had all your symptoms except weakness. I also had burning but really didn't notice it much as the other symptoms were causing me more problems. The weird crawling sensations and occasional sharp stabbing pains were intermittent and random. After a few months the only thing constant was the burning and that is still the case a year later. I rarely get any of the other sensations now. For me diet and stress are my biggest triggers and cause me sleepless nights which makes everything worse.
For stress I have a few relaxation type CD's that I listen too and that helps. I also meditate every morning. With diet I avoid sugar and processed foods and other foods I have personally found to be a trigger.
Keeping a journal has been a good practice for me although I have to remind myself that sometimes there is no rational reason I can see for a symptom popping up. It has helped me to see my progress and catch things that have been triggers.