I think it is possible that he has psoriatic arthritis.
Sometimes the pain, esp in the feet precedes the psoriasis, which may not come at all in some people. Or in others the psoriasis may be dominant later.
Did Alan's psoriasis flare after a flu shot?
This is an autoimmune disease.
http://www.mayoclinic.org/diseases-c...s/con-20015006
The tendons and their attachments are usually affected more than the joints themselves...and his foot pain, could be explained by this.
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Weezie looking at petunias 8.25.2017
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