When it comes to art, beauty is in the eye of the beholder. And so, apparently, is a medical diagnosis.

Rheumatologist Sara E. Walker spent her life doing research on and treating patients with lupus and other conditions. When she saw a picture of Italian Renaissance painter Raphael’s “The School of Athens,” she couldn’t take her eyes off the lone figure sitting on the stairs off to the side from the other philosophers, his solemn face looking downward.

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