Itchy Foot

[TheSauce05]

I have had this problem for a little over a year now.  I've thought it could be athletes foot, but I've tried creams and powder and neither have cleared it up.  What is happening is I am getting small, "water-filled" blisters on one of my feet.  It only affects 3 toes, from my "pinky" toe to my middle toe and they itch horribly.  Then the area gets quite dry and cracks and the dead skin kind of flakes off.  It started after I got a really bad blister on my pinky toe caused from walking to long in tight boots.  I had scabes about 6 months before and I thought that maybe it they had come back, but it's been a year and it hasn't spread any further than those 3 toes and I don't have the characteristic signs of scabes.  What could it be and what can I do to try to clear it up.  Unfortunately, I can't afford to visit a doctor, so anything over the counter would be great, or at least some sort of explaination.  Thanks in advance.