Dr. Alvarez says this strain can be caused by "wearing unsupportive shoes, walking or running ... morning or after sitting for a while." If you're unsure what's causing your heel pain, gently ...

After 1 week of topical treatment with salicylic acid 6% multivesicular cream applied b.i.d. to the left heel only, there was rapid resolution of both hyperkeratosis and pain (Figure 4).