I have some answers, but first my question, please. I know from two podiatrists that I do have blood flow to my feet but those ulcers last 5 mo. or more anyway, no matter what, and HOW DO YOU TAKE YOUR PULSE IN YOUR FOOT? Never heard of that.
Okay for the person who peels off the huge blisters dead skin, you do see a podiatrist, and maybe one or two others for extra opinions, don't you?
My first one had me on just ointments after shaving off (debridement) some of my callus dead skin (on bunions), but it wasn't working. The 2nd one said ointments will never work while there's any dead skin, and you can't get it all. What you gotta have is a prescription for some of those ultra-thin patches called DuroDerm, to put on right after removing that skin. They're $8 each, 4" approximately, and you don't use a whole one, just cut a big enough piece.
My pharmacy didn't carry them so I went to a medical supply place where they sell wheel chairs and the like. The girl didn't read the 4X on the script which probably meant I'd only need four pads, so I bought ten! Hope they don't get old. The condition can be chronic. I heard of a man who had the ulcers on his leg or legs, had to have skin grafts or transplants.
It's serious. Yep, podiatrists told me after a while they just won't heal at all anymore, and one xrayed to make sure the infection hadn't gone to the bone of my toe joint, which would have meant amputation. I hadn't known to see a doctor until there was a smelly discharge. Don't wait that long!
I'd had that blister from some summer sandals with cork (copies of Birkenstocks) on one foot, not the other, for a year or two. While under treatment a couple blisters came up on the other foot, and with the DuroDerm patches, they healed immediately. The first one is still giving me trouble.
Mine was from friction so I was told to try to stay off my feet, bought a used wheelchair from a weekly paper, and it helped a lot. Take care and good luck.
The debridement of calluses doesn't usually hurt, because diabetics have some nerve damage by the time they have those, and less feeling in the foot.