The 'burning baby', son of P. Karunakaran and K. Rajeswari of T. Parangini in Villupuram district, was discharged from Government Kilpauk Medical College Hospital (KMC) on Thursday morning.
However, hospital authorities will be informing child welfare authorities as well as the local police to periodically monitor the child.
The baby, now named Jayaramachandran by his parents, had spent 82 days at the hospital after having reportedly having 'caught fire' on January 15, just a few days after he was born.
Doctors at the KMC said they had performed 40 different medical tests on the baby. All his parameters were normal and there were no incidents of burning while he was at the hospital.
"Since he was in the air-conditioned neonatal intensive care unit, we even kept him at normal temperatures to see if that would trigger an incident, but nothing happened," said dean Narayana Babu.
A genetic test was also performed on the parents, and on their first son Rahul, who too had been brought to the hospital in 2013 for spontaneously bursting into flames. However, this too yielded no results, said Dr. Babu.
"The reason we kept the baby here for this long was that the parents had told us that Rahul had 'caught fire' four times in the first 73 days after his birth. We wanted to make sure nothing like that would happen this time," he said.
Head of the psychiatry department S. Rajarathinam said the parents had undergone psychiatric counselling but had shown no signs of mental illnesses.
The baby weighed 2.1 kg when he was admitted and now weighs 5.3 kg, the doctors said.
