Updated

Pope John Paul II (search) is vomiting, suffering strong headaches and not responding well to his medications, an Italian news agency reported Tuesday, but the pontiff's chief doctor dismissed speculation the pope will be hospitalized again.

The Apcom news agency, quoting unnamed sources, also reported that John Paul was suffering from overall weakness as he recovered from surgery to ease a breathing crisis.

But the head of the pope's medical team, Dr. Rodolfo Proietti (search), ruled out media speculation that the pope's health had deteriorated suddenly and that he might be sent back to the hospital.

John Paul has scaled back his appearances since his back-to-back hospitalizations and has designated cardinals to take his place during this week's busy Holy Week ceremonies. The Vatican has only confirmed one appointment for the pontiff — an Easter Sunday (search) blessing.

The pope did not name a stand-in, however, for a Way of the Cross procession at the Colosseum on Good Friday evening, raising the possibility he would participate in some fashion, although it appeared doubtful he would go to the site.

Vatican Television officials said they had installed cables and other equipment in the pope's apartment above St. Peter's Square for the possible transmission of a video to be seen by the pilgrims gathered at the Colosseum.

The pope has made three public appearances since being discharged from the hospital — his latest on Palm Sunday when he blessed the crowd silently from his third-floor window. During that appearance, the pontiff pressed his hand to his head and pounded a lectern in apparent frustration over his difficulty in responding to the crowd.

It was the first time in 26 years as pope that he was unable to preside over the Mass ushering in Holy Week, the most important season on the Christian calendar and long one of his favorite appointments.

While his physical condition is "fragile," John Paul is "perfectly sound mentally," Cardinal Camillo Ruini, who stood in for the pope on Palm Sunday, said in an interview with the Italian religious affairs weekly magazine Famiglia Cristiana. Ruini said the pope "continues to carry out the acts of government and to assume the major decisions, as he has always done."

The 84-year-old pope has been convalescing at the Vatican following Feb. 24 throat surgery to insert a tube in his windpipe and ease his second breathing crisis in less than a month. He also suffers from Parkinson's disease, which affects muscle control and makes it difficult for him to speak clearly.

The pope's gaunt appearance the few times he has been seen has led to speculation in the Italian media that his condition has suffered a sharp setback. Vatican officials, speaking on condition of anonymity, have denied there has been any sudden crisis but acknowledged the convalescence may be behind schedule.

No details on his state of health have been released since the pope's return to the Vatican on March 13.

The Vatican, however, says the pope is carrying out his major duties. On Tuesday, it reported the pope had named new bishops in the Ivory Coast and Spain. Under church law, only a pope can nominate bishops.