Shingles, the infection that sent Sen. Dianne Feinstein to the hospital in February, affects a third of Americans. But the related complications the 89-year-old senator faced — encephalitis and Ramsay Hunt syndrome — are less common and can be severe.
Feinstein (D-Calif.) returned to Washington last week after a months-long absence and has recovered from the encephalitis, an inflammation of the brain, her spokesman said.
