Sen. Dianne Feinstein, D-Calif., is receiving treatment for shingles in a California hospital, Fox News Digital has confirmed. 

"I was diagnosed over the February recess with a case of shingles. I have been hospitalized and am receiving treatment in San Francisco." Feinstein's office shared. "I hope to return to the Senate later this month."

Feinstein, 89, said she expects to make a "full recovery." 

Shingles typically develops in older adults who had chicken pox, or the varicella-zoster virus, when younger. Its hallmark is a painful rash that clears up within a month in most cases, but can sometimes lead to nerve pain that can linger for longer.

On Feb. 14, Feinstein's office announced that she will not seek re-election in 2024.