On his return from Britain Mr Buhari said that he had never been so ill and alluded to having had a blood transfusion, but further details about his condition remain closely guarded.
He has not been seen in public for more than a week.
On his part, a former governor of the old Kaduna State, Alhaji Balarabe Musa, said the way forward on the controversy surrounding the health of the President was for the Senate to constitute a board of inquiry to look into the issue.
Speaking to pressmen on Wednesday at the end of the weekly Federal Executive Council (FEC) meeting in the Presidential Villa, Abuja, the Minister of Information and Culture, Mr. Lai Mohammed, said Buhari was not in the meeting because he chose to rest.
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The Jazz , who had a chance to eliminate the Clippers on Friday night in Salt Lake City, were 1-2 in their home games. Jordan fouls him pretty hard here, and Hayward is still able to get the shot up and in, and then make the free throw.
In her tweets, Mrs Buhari that he was continuing to "carry out his responsibilities" and has been meeting with ministers.
"I want to use this opportunity to thank Nigerians who have expressed a lot of concern and sympathy and those who have been praying for him". She says some prominent Nigerians are demanding that he take medical leave amid questions about his fitness to govern.
On Friday, Buhari failed to attend the usual prayers at the state house mosque.
"The media team of the Presidency is not managing it (information around the President) well".
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It also linked to a picture of Far Cry 3 villain and fan favourite, Vaas, accompanied by his most famous line of dialogue. Ubisoft is up to something, and it has Far Cry fans grasping for straws and trying (and failing) to remain calm.
"It is teamwork. So, President Buhari is working", she added.
The president's absence yesterday at the meeting was the third consecutive time the president would be staying away from FEC.
Last week, presidential spokesman Garba Shehu said Mr Buhari was "taking things slowly, as he fully recovers from the long period of treatment" in the UK.
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You don't have to be a master lip-reader to figure out that he was telling Machado he did not agree with his teammate's decision. Barnes certainly sounded honest when he publicly apologized to Machado during his postgame interview in the Red Sox clubhouse.