The 18-year old actress is undergoing treatment in the intensive care unit of a private hospital for spine and pelvic fractures and live contusion, hospital sources said.
Swarna fell from the balcony on Wednesday night and was in the Neuro ICU. The actress, recovering from fever in the past few days, was with her mother at the flat when the incident occurred.
According to family sources, Swarna felt dizzy and fell off the balcony. Swarna came to the limelight after participating in some dance reality shows of various television channels.
She is the heroine in the film 'Buddy', the shooting of which is in progress here. The young actor has also essayed roles in a few other films, including 'Pranayakadha', 'Flat', and was to act in two Tamil films.
Police said they have not yet registered a case in connection with the incident.