On January 4th, Nishikawa Takanori (a.k.a�T.M. Revolution) revealed through�his official Twitter that he was diagnosed with an acute�inflammation of�the vocal cords.

Nishikawa's tweet read, "I have bad news...I overworked my throat during the end of the year and during the New Year...I feel quite wretched as a professional singer...". He also attached a photo of the medical certificate in the tweet, which showed that Nishikawa was prohibited from using his vocals�for a week.

Many fans left messages of concern and encouragement, and Nishikawa assured that the illness was not all that serious.

Source: Searchina