Kesha, known as "Mustachioed Nanny" from Sergey Prokhanov's "Theater of the Moon," was rushed to a spinal neurosurgical center due to severe back pain. The 73-year-old was diagnosed with spinal canal stenosis and a cyst, putting his upcoming performances at risk.

Sergey Borisovich had been struggling with back issues for some time, but his condition recently deteriorated. After spending a day in the hospital for procedures, he was sent home for recovery under medical supervision. Doctors advised a month of rest, warning against physical activity, which may lead to the cancellation or rescheduling of his scheduled performances. Sergey has not been reachable for comments.