MUST READ: Arvind Kejriwal's 'tongue too big for his mouth'

A diabetic, Arvind Kejriwal, is likely to be in the Bengaluru's Narayana Health City for about a week under medical observation after undergoing a five-hour throat surgery.

Bengaluru: Delhi Chief Minister Arvind Kejriwal on Wednesday underwent a five-hour throat surgery at a private hospital in Bengaluru for a persistent cough.

Due to the surgery, Kejriwal will not be able to talk to for a while.

Kejriwal, who arrived in the city from New Delhi on Tuesday for the long-pending surgery, was first diagnosed by Narayana Health City's medical director Paul C Salins for his bouts of coughing.

According to Salins, "computer analytics confirmed that a restricted space for the movement of his tongue and an enlarged soft palate and uvula in relation to a slight increase in the volume of the tongue caused kinematic problems in function".

To put it simply, his tongue is too big for his mouth.

"The surgery corrected an anatomical abnormality of Kejriwal's oral-pharyngeal and palatal area, which was causing small amounts of saliva to trickle into his air passages whenever his nose breathing was affected by allergy or other factors," said Narayana Health City in a statement.

A diabetic, Kejriwal, 48, is likely to be in the hospital for about a week under medical observation.

He has been advised not to talk.

"The recovery for such a long-standing problem with its own functional accommodation will be gradual. Based on his recovery on Thursday, the doctors will advise him on when he can start talking," Bangalore Mirror quoted a hospital spokesperson as saying.