MANILA - President Rodrigo Duterte on Thursday evening denied having kidney problems as alleged by his archnemesis, communist leader Jose Maria Sison.

“Dying? Kidney ana sa kamot nako kagwapo o. O nia ngari o. Hain bay tinuksanan ana?” Duterte said.

(Dying? Kidney, my arm looks really good. Here, see?)

Sison on Tuesday noted that Duterte had dark discoloration on the face, “which is supposed to be a symptom of a kidney problem, an indication of renal failure.”

Sison, citing a doctor, said Duterte must be undergoing dialysis.

“The kidney problem must have been caused by excessive intake of pain-killers by Duterte. He has publicly admitted suffering frequently from pain because of his damaged spine,” Sison said in a Facebook post.

The President previously explained that his skin darkened because he goes up and down the mountains.

• 'I go up and down mountains,' Duterte says on darker skin

He slammed Sison for being engrossed on his health, saying the communist leader has cancer.

Opposition politicians said Duterte should reveal the true state of his health as it is a matter of public concern.

Duterte and Sison, his former professor, have exchanged heated words this month, with the communist leader earlier claiming that the President was in a coma.

This followed the collapse of peace negotiations between the government and the communist movement.

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