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KT Tape also works well for hotspots (I like it better than moleskin):
Badger Foot Balm is also a quality product for feet:
I hope it gets better. Have you tried KT tape on the arm? I've been using it and it really does ease a lot of the strain.
*insert obligatory "Hail Bezos" here*
I got turned on to this after a bad knee sprain.
Here's how to tape the elbow.