Bollywood's Irrfan Khan has 'rare disease'

Bollywood actor Irrfan Khan has revealed that he is suffering from a "rare disease".

He has asked his fans not to speculate on his condition, adding that he will share more when "further investigations come with a conclusive diagnosis".

Khan, 51, has acted in more than 100 films, including Bollywood hits Piku, Maqbool, Haasil and Paan Singh Tomar.

His English language films include Life Of Pi, Slumdog Millionaire and The Amazing Spider-Man.

He took to Twitter on Monday to talk about his illness.