The 82-year-old will nonetheless attend a campaign event for the upcoming European Parliament elections later on Tuesday, the reports said.
Berlusconi underwent heart surgery in early 2016.
Earlier this year, Berlusconi announced that he would run in the European poll to spark a debate about "the future of the world." The EU-wide ballot will take place in Italy on May 26.
Over a three-decade political career, Berlusconi has been mired in a long list of corruption and sex scandals. He was until last year barred from public office due to a conviction for tax fraud at his media empire.
He remains a combative but marginalized figure after being upstaged by former ally Matteo Salvini as the leading figure of the Italian right.
Berlusconi underwent heart surgery in early 2016.
Earlier this year, Berlusconi announced that he would run in the European poll to spark a debate about "the future of the world." The EU-wide ballot will take place in Italy on May 26.
Over a three-decade political career, Berlusconi has been mired in a long list of corruption and sex scandals. He was until last year barred from public office due to a conviction for tax fraud at his media empire.
He remains a combative but marginalized figure after being upstaged by former ally Matteo Salvini as the leading figure of the Italian right.