Calloused Achilles Tendon Area?

[XCrunner]

Greetings! As we are all too familiar with blisters and the calluses that inevitably follow, I was wondering if anyone here could possibly answer this. In my experience when blisters form, calluses all but inevitably follow if the area is consistently irritated. But I have one area on my foot that just never seems to callous! Has anyone ever had, or heard of, a callous forming along the achilles tendon proximal to the heel? Thanks...

[Flesh Thorn]

There is an Achilles bursa on either side of the heel where the tendon attaches and it sucks if it becomes inflamed. I don't have a callous, but one of the bursa is now a hard lump.

[PocketKings]

That area of my foot is one that always had/has a callous. However, it was always irritated and never built up like other areas. I used to have blisters form with callouses overtop. When the blister broke, it was raw skin. Rinse, repeat.

Do you get them from running shoes or boots?

[XCrunner]

I've gotten them from both boots and shoes. I just picked up a new pair of Merrell barefoot style shoes, and the back edge is very rigid which is no doubt the cause of the blistering. Just wondering if it was even possible to form a callous there, as that's really the only part of my foot that hasn't toughened up. Love the shoes, I may have to eventually cut out part of the lip on the backs, or just slap some 100 mph tape on my achilles region.

By the way, does anyone run with the barefoot style shoes made by Vibram (five finger shoes) or Merrell (trail glove)? I'm fairly new to them, but so far swear by them! I've heard of stress injuries caused by initial overtraining in them, so read up if you plan on using them. Besides the fitness perks of running in them, they are unofficially known to be a good therapeutic tool for people with bad backs, knees, and what not (IE, people who served careers in airborne units ). I highly suggest them!