Is there a guide anywhere that may help
With deciphering the cause of a blister in a certain location?
I have never had blister issues and now I am
Getting them on the main inside knuckle joint between arch and big toe on both feet.
I have ran in ASICS GT 2000 shoes for 20 years.
Hoping something may be able to shed some light.
Probably NOT the shoes then, but the fit does vary from year to year
Could be sox, could even be your feet changed shape?
Could be some flavor of dermatitis, presenting as blisters?
Also, there’s no shame in lubing your feet
A member of my local running club shared a book on foot care a few years ago. She had just completed two (2) 100-mile Trail Runs in 40 days without getting a single blister or losing any toe nails. She contributed that to what she had learned and followed from the book. I don’t remember the name of the book, but was probably Fixing Your Feet: Injury Prevention and Treatment for Athletes It should have all the information you are looking for on deciphering the cause of blisters.