I´ve just diagnosed myself with this, it´s a sharp pain between the 3rd and 4th toes in the ball of my right foot. I feel it when I´m walking. It´s not something you can just ignore!
I´ve been feeling the “rolled up sock” thing for some time, without pain. So it builds up slowly. I changed my bike and shoes early in the year, and I think it´s down to the narrow shoes. Very nice to look at. I´m going to have to get wider shoes and see how that goes.
Important to note that I don´t get the pain while riding, just when I walk. Shoes are NW brand and they are a half size too small.