The Broadway veteran, 46, thanked fans for their "good vibes" via Twitter after undergoing an MRI scan on Monday.
"Thanks for all the good vibes everyone. Stupid ole neck flares up again. Thanks for the ' neck ' support ! :)," Chenoweth tweeted Tuesday.
The singer and actress first revealed her mysterious condition on Monday, writing on the social media site that she was "back in la. unable to move."
"Numbness and tingling in arm. Going to cedars dr tomorrow. Ah anyone who prays please do!" she wrote at the time.
Chenoweth followed up her post with an update in which she asked fans to keep sending positive energy her way.
"Waiting on MRI results. No matter what I will be ok. Thanks everything for praying and sending good vibes. #thinkingpositive" she tweeted later that day.
The Emmy and Tony winner is best known for her role as Sally Brown in Broadway's You're a Good Man Charlie Brown and for originating the role of Glinda the Good Witch in the musical Wicked. Most recently, Chenoweth has had a recurring guest role on Fox's musical comedy Glee, and is expected to return to Broadway in 2015 for an upcoming production of the 1978 musical comedy On the Twentieth Century.