Glee star Kristin Chenoweth has headed to hospital after she fell sick with a mystery illness.

The actress/singer fell ill upon on her return to Los Angeles from a trip, and she told fans she would be going to the city's Cedars-Sinai hospital after growing increasingly concerned about her symptoms.

In a post on Twitter.com, she writes, "Back in LA. Unable to move. Numbness and tingling in arm. Going to Cedars dr tomorrow. Ah anyone who prays please do!"

Chenoweth later revealed she had undergone a magnetic resonance imaging (MRI) scan, adding, "Waiting on MRI results. No matter what I will be ok. Thanks everything for praying and sending good vibes. #thinkingpositive (sic)."

The star suffered a serous head injury in 2012 when she was hit by a falling piece of lighting equipment on the set of TV drama The Good Wife. She spent months undergoing physical therapy as part of her recovery.