I read withpleasure that I am not alone with this problem.however it is very scary.I went to the physio who said that I have tendonitis of the longtitudinal tendon.This only started after continual wearing of the new fit flop.i walked miles and miles in them and I think i have problably got some nerve damage.I am not diabetic as I did a fasting Blood glucose and no loss of strength or any other sinister signs.I just wish it would go away.never thought that 5months of continuous flip flop wearing could cause this.