Interesting... I have had the sensation of "walking on marbles" for as long as I can remember (memory fade) and in recent times have been formally diagnosed with nerve damage, filed under "peripheral neuropathy" and being treated with Pregabalin (previously Gabapentin). Wouldn't think it is helping much until I stop taking it and then I know for sure it is doing something! I would be interested to know more about the laser treatment and secondly, did you ever find an insole worth spending money on?