Earthquake brain phenomenon observed

9:11 am on 10 June 2013

A psychiatrist says a phenomenon called earthquake brain is affecting the ability of some people in the Christchurch to think clearly.

Caroline Bell said it comes from a build-up of the stress hormone cortisol.

Ms Bell said people are now less worried about actual earthquakes and more concerned about how the disaster has affected their day-to-day lives.

She warned the worst could be yet to come for those suffering quake-related anxiety, depression and stress.

The third year after a natural disaster is often considered the worst if outstanding matters such as insurance payouts are still unresolved.