MALCOLM BRABANT:

The psychologists' concerns center on Moria. It was set up as a transit shelter two years ago.

But since the migrant trail north was closed down in the Balkans, it has effectively become a permanent internment camp that is despised by its 6,000 or so occupants.

This video from the start of this year shows police trying to prevent a migrant from hanging himself on the fence. Volunteers on the island say the man succeeded in committing suicide some time after this attempt.

Outside the wire, we met a Nigerian man called Frank. He asked us not to identity him. He's afraid that he will be deported for speaking out about conditions inside Moria.

He says life in the camp has a debilitating effect on the mind.