A spokesperson for the rock legend confirmed in a statement that he was hospitalized in Tokyo due to an illness that led to the postponement of several concert dates.
His treatment has been touted as "successful" but no other specifics of his ailment were given, reported Billboard magazine.
"He will make a complete recovery and has been ordered to take a few days rest. Paul has been extremely moved by all the messages and well wishes he has received from fans all over the world," his representative said.