This could be attributable to a whole list of things that are not psychiatric or neurological. The experience I can relate to but it is my experience. I've had different experience with tags. I, too, personally do like to remove them without damaging the garment. The shirt I have on now has a tag that is sown flat. Hasn't been bothering me.

Water that is irritating on my skin is usually hard water. Rain water does not bother me so much. If my hair is wet and it is hot outside, I don't mind. If I've recently bathed I dry my hair as best I can. Doesn't bother me that much. I think in these instances you are expected to deal with it or get over it. People do shave their heads for less.