Bolivian President Evo Morales cancelled his busy Monday schedule after doctors diagnosed him with respiratory trouble, the vice president said.
Morales, a workaholic who tends to start his day at 5 or 6 am and often toils past midnight, had seven public events planned for Monday, in La Paz and the silver mining city of Potosi.
But late Sunday the president had a medical checkup and doctors found "a complicated health problem" related to his respiratory system, Vice President Alvaro Garcia said without elaborating.
Doctors told Morales, 53, to stay home and undergo unspecified treatment. He is expected to get back to work late Tuesday or Wednesday, Garcia said.
The last time Morales underwent medical care was in March 2012, because of dizziness that the president himself blamed on fatigue and poor eating habits.