Diego Maradona (Getty Images)
When Marcos Rojo scored the winning goal in the 86th minute, Maradona leaned over the front of the VIP box from where he was watching with friends and made a one-fingered salute while shouting an obscene insult.
A video later emerged showing the 1986 World Cup winner looking unwell, walking with difficulty and being guided into the dining room of the VIP section by two friends and then sitting in a chair.
"I want to tell everyone that I am fine, that I am not and was not hospitalised," the 57-year-old wrote on Instagram on Wednesday.
A video emerged showing the 1986 World Cup winner looking dazed.
He walked with difficulty and was guided into the dining room of the VIP section by two friends before sitting down in a chair.
"At half-time against Nigeria, my neck hurt a lot and I suffered a drop in my blood pressure," he said.
"I was checked by a doctor and he recommended that I go home before the second half, but I wanted to stay because we were risking it all," he wrote.
Former England star and BBC pundit Gary Linker blasted his antics and called him a "laughing stock."
"There's Diego Maradona celebrating, Lineker said. "I think there's a danger he's becoming a laughing stock I'm afraid.
"(He's) let himself down with that celebration. You understand how he's euphoric, but this kind of reaction... really, Diego?"