President Cristina Fernandez will undergo surgery to drain blood from a chronic subdural hematoma inside her skull, the Argentine government said Monday.

Fernandez entered the Favaloro Hospital in Buenos Aires to be prepared for Tuesday's procedure, according to a statement released by the health center.

Doctors last Saturday diagnosed the hematoma, which resulted from head trauma that the president suffered on Aug. 12, and initially they recommended that Fernandez get 30 days of complete rest.

However, "the initial proposal for rest ... had to be modified" because Fernandez "yesterday, Sunday, Oct. 6, at 7:30 p.m. developed a tingling sensation in her left arm."

"Given such symptoms, our team gathered at the Olivos (presidential) residence ... (and conducted) a physical neurological exam and found a transitory and slight loss of muscular strength ..." the statement said.

With that diagnosis, "this team recommends surgical intervention. That consists basically of the surgical removal of the said hematoma."

Fernandez, 60, suffers from stress and in January 2012 she underwent an operation to remove her thyroid gland. EFE