I have had it before, as well as having chronic ingrown toe nail problems when I was like 13. It lasted about 5-6 weeks, and two surgeries on my big toe toe nail to kill off the roots of the nail leaving a Mohawk shaped nail ever since. Can't imagine the wear and tear that a guy like DR puts his dawgs through every day. If something is slightly off, it can become a real problem.
I am fighting plantar fascitis in my same foot right now. $600 worth of lifts and inserts in my shoes later, which BTW, I have been wearing the wrong size shoe since the hammer toe, turf toe time in my life. It has been about 5 weeks now of trying to get this shit straightened out so it doesn't feel like my foot is broken every time I stand after sitting for about 5 minutes and having to get myself hyped up for the pain when first getting out of bed later, it is finally coming around.