"Medical condition.. surgery.. can't write," Big B wrote in a blog entry dated Saturday. Over the past few hours, many of his fans have naturally taken to social media to wish him good health.
The actor's office is yet to officially give out details.
Big B started the year with a packed schedule. He has five films coming up. While his next release is Rumi Jafry's psychological suspense drama "Chehre", co-starring Emraan Hashmi and Rhea Chakraborty, Big B has lately been busy shooting for the thriller "Mayday", co-starring and directed by Ajay Devgn. The film also stars Rakul Preet Singh.
He will also be seen in "Sairat" maker Nagraj Manjule's social drama