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It appears to be Morton's neuralgia
due to the compression of nerves under the foot. It can also be chronic plantar fascitis where there is inflammation of the under foot tissue causing pain. You can take pain killers for a week as per your Doctor's orders. Avoid wearing uncomfortable footwear. You may try using Microcellular rubber slippers (MCR Slippers). Eat balanced diet. Sleep well. Don't take unnecessary tension.