Nigerian President Muhammadu Buhari on Monday dismissed insinuation that his trip abroad might cause tension in the country, saying is there anybody that doesn't fall sick.

The Nigerian leader told reporters at Nnamdi Azikiwe International Airport, Abuja, shortly before his departure to London, that the National Assembly (NASS) was formally notified of his vacation as required by law.

Earlier, Femi Adesina, Special Adviser on Media and Publicity to the President, dismissed media reports that Buhari was ill.

The presidential aide said Buhari was going to London to spend part of his annual leave.

According to him, the president would use the opportunity of his vacation to see an ENT specialist for a persistent ear infection.

Adesina told reporters that the president has been effectively performing his presidential duties until the time he left Nigeria for London on Monday.

"Till the very last minute that he is traveling, the president performed the duties and functions of his office as president," he added.

"So, illness is not the issue, but as a human being, yes he can rest. He has been President for one full year, you know that in February he took 5 days leave; he is taking another 10 days now that means 15 days leave in one year," the president spokesperson said.

Local media reports earlier suggested that the president was recently prevented from making scheduled trips within Nigeria and outside the country due to the