The Russian president suffered ‘severe pain’ in his head, blurred vision and a ‘numb tongue’ according to General SVR Telegram channel.
He is also said to have experienced a ‘partial loss of sensation in his right arm and leg’ requiring urgent medical attention.
A ‘council of doctors’ performed first aid, and ordered Putin to take medication and rest for several days.
But rather than following this advice, the Russian premier refused to rest, choosing instead to give gloomy reports from the war in Ukraine.
His condition improved, easing concern among his large team of medics, said the post.
It stated: ‘The president’s relatives were more worried.’
For them ‘such a sharp deterioration in Vladimir Putin’s health caused a nervous reaction, more like panic’.
The channel, which claims inside knowledge from the Kremlin, has repeatedly said Putin is terminally ill with cancer, and his conditions and medication impacts his decision-making.
‘The temporary sharp deterioration in the president’s health has already made those closest to him tense,’ said General SVR.
‘The sudden death of Putin will put them all in front of the unknown, or rather, on the brink of survival.’
It stated that ‘none of them even had a rough plan of action in this case’.
Rumours have spiralled about Putin’s health fuelled by his habit of gripping hard onto desks and making strange twitching movements with his feet.
The Kremlin and his ministers insist he is in perfect health.