6.7 year old dd is OBSESSED with going to the toilet.
She will sometimes go 4 or 5 times an hour. I've taken her to the GP on 3 separate occasions to test for water infections etc., but she's fine. It's psychological as opposed to a bladder/medical issue IMHO. She will squeeze a tiny drop out each time rather than "saving it" for a proper wee iyswim?
If we're out or she's doing something to distract her, she'll go a normal amount of times. If she's a bit bored or has time to think about it, she's a nightmare. At bedtime for example, she'll go before the bath, after the bath, after she's got pj's on, after her story and then once lights are out, she'll go another 3 or 4 times in a half hour period 
The teachers have mentioned it at school as well, albeit it's not to the same extent.
Has anyone dealt with similar issues or have any advice/thoughts?