Millions of people may have survived the deadliest tsunami in living memory, but many are so deeply traumatized it will take years for them to heal, if ever, medical experts said Monday.

Lo Wing-lok, a Hong Kong doctor with Oxfam who is helping survivors in India, said survivors were in shock and utter despair in Tamil Nadu, the country’s worst-hit area.

“The psychological trauma is very intense. People are sitting outside their destroyed homes with nothing left. Crying and weeping. It’s a picture of despair,” Lo said by telephone.

“I went to a village with 24 deaths, there was weeping and crying in every corner. It will take a very long time for them to recover completely, if at all,” said the infectious disease expert who warned of likely epidemics of cholera and dysentery.

“Most of them are fishing folk. They don’t know how to restart their livelihoods with their homes and fishing boats gone. Even if they were given back their boats, they are too frightened of the sea to go back, for at least the time being.”

A 9.0 magnitude undersea quake off the Indonesian island of Sumatra the day after Christmas sent tsunamis slamming into Indonesia, India, Thailand, Sri Lanka, Malaysia and other countries as far away as Africa, killing more than 145,000 people so far. Thousands are missing.

At least five million people are displaced and many face the risk of diseases such as cholera, typhoid, hepatitis, E. coli and salmonella in the very near term, doctors have warned.

Equally insidious, though not as obvious, is the psychological scars that many survivors will live with for the rest of their lives.

WOUNDS TOO DEEP FOR THE EYES

Rescuers in Velankanni in India celebrated a miracle last Tuesday when eight-year-old Anthony Praveen sat up amid a pile of corpses that were about to buried in a mass grave, reported the South China Morning Post Monday.

The boy, who lost his parents and sister to the giant waves, was able to utter his name and address in hospital but has remained speechless since. Doctors there have diagnosed him as suffering severe trauma, with one classifying it as a case of post-traumatic stress disorder (PTSD).

Psychiatrists say survivors of major disasters will suffer emotional turmoil and grief for months, even years. Those who need to return to making a living would be better able to cope.

“For those who don’t need to worry about survival, they may go deeper into emotional turmoil and between 15 and 20 percent (of survivors) develop PTSD,” said Tsang Fan-kwong, a specialist in psychiatry at Hong Kong’s Castle Peak Hospital.

Some symptoms of PTSD include nervousness, insomnia, excessive worrying. Sufferers also re-enact scenes of the catastrophe in their minds and avoid anything that reminds them of the disaster, such as going to the beach or watching television news. People with severe PTSD go into Depression.

PTSD could occur immediately or take place years later, after the victim has handled problems in the aftermath of the crisis.

Due to the body’s natural healing powers, the majority of survivors would be able to heal themselves and recover.

But Tsang said those with PTSD will require professional help - such as counseling, psychotherapy and making sure they have enough sleep - to prevent them from going into Depression.

“Depression is a very debilitating and painful disorder and sufferers will not be able to carry on with their daily activities. If not recognized and treated, 15 percent (of those with Depression) may commit suicide,” Tsang warned.