Mr Karunanidhi had spent a week in Kauvery hospital on December 1 after receiving treatment at home for some time for a drug-induced allergy.
Doctors said he was there for nutrition and hydrational support. He was allowed to go home a week later. He was advised to take rest and warned against contracting any infection.The party had asked its supporters not to visit the veteran leader in view of the medical advice. Later, actor Rajinikanth and noted Tamil lyricist Vairamuthu had visited the leader and inquired about his health.