Bollywood megastar Amitabh Bachchan, who is tracking the globe for his international concert the Unforgettable, has developed a severe cold and fever.

The versatile actor, who is in Los Angeles right now, informed ardent fans on his blog www.bigb.bigadda.com that he was not keeping well: 'I have developed a fever and an inflamed chest.'

The Bachchans' much-awaited Unforgettable opened in Toronto July 18 and travelled to Trinidad and in both the places it got an overwhelming response.

Amitabh has teamed up with his son Abhishek and daughter-in-law Aishwarya Rai for this tour. Preity Zinta, Riteish Deshmukh, composer duo Vishal-Shekhar and choreographer Shiamak Davar are also part of the troupe.

Going under the weather has invited a lot of attention from his close associates and family. However, Amitabh didn't mention on his blog whether he will perform Saturday or not.

'I have successfully managed to get all attention towards me. The wife, the children, the staff, the production and the concerned bloggers! Each have their own home grown remedy for my ailment.'

Talking about the suggestions he is getting, he said: 'Sweat it out, keep the juices going, do not strain, sprinkle eucalyptus on pillow, sprinkle in steam, sprinkle on forehead, sprinkle on chest, that's a lot of eucalyptus.'