I just when through a bought on my right foot. Anterior side. Never had it until about 1 0 years ago when I bought some New Balance Gel shoes I needed for a trip fast. After week I had it in both feet. Anyway this time I did not go to the doctor. I used some of the sports elastic K type tape, stretching and message. NSAD to reduce swelling. I also switched from my crocks with a slightly high instep to waring my trail shoes with my good inserts. Also I had been sleeping on my back at the time due to bruised ribs which I think caused it this time. Took a few weeks to stop hurting. Funny I could ride after a week and riding helped. I hiked about 5 miles doing tail maintenance yesterday and all is good. I have not wanted the shot but friends I know have had it done.
For me messaging needs to be aggressive and in the beginning every hour or so while awake.