I'm not totally sure exactly what you mean by the water trickling sensation you are speaking of. I have for years had an odd sensation that feels like water(or liquid) is "gurgling" up the inside of the back of my neck. It kinda seems like air bubbles are gurgling upward through tubing in that area. I cant' really decide for sure if I completely feel this, or just hear this echo-ing through my skull bones because it is so close to my inner ear. It will gurgle a few minutes, then quit. It may happen several times a week, or only happen once a month or so. I don't know what it is. I thought for many years that it was probably high blood pressure sensations, but dropping my pressure down had no effect on the frequency of this odd stuff. Did this match what you discribe?
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Mine went away completely. Or at least I haven't noticed it in a long time. At first it was in my scalp. Almost like a bug crawling. Then in my legs, like a worm in my skin. After paying attention to it I described it to the doctor as a trickle of water. They said it was my nerve endings (probably), and it was never discussed again. Mary
it does lessen in time. at first it was all the time. it would travel. felt like something trickling down my skin and sometimes like something going up my skin. i would scratch myself raw till one day before scratching i looked at the spot, saw nothing and told my body to shut up. it worked. so after that i would look first and if nothing was there use the shut up method.
i seldom feel it anymore.