Morton's neuroma is characterized by pain between a pair of toes, between the "knuckles", and a painful "click" there in every step. The nerve has been squeezed and has swollen, which is called a neuroma. It's caused by wearing shoes that aren't wide enough. It disproportionately more often affects women as they tend to have tighter footwear but of course can affect men too, especially for those that have wide feet. 99% of modern shoes "bunch up" the toes and can cause this.

If you have these symptoms, you should start wearing shoes with wide toe boxes immediately to not make it worse, and also consider wearing toe separators. If it's still not too bad, this can make the symptoms go away. This helped for me but I never came back to normal. I'm currently recovering from surgery to have this fixed, where they simply cut off this nerve.