Psychological implications of the 2004 tsunami

Estimates are highly variable and compounded by definitions. One WHO estimate was that 5-10 percent had serious psychological problems requiring professional assistance (UN, 2007). Another survey claimed that 40 percent of children had post-traumatic stress disorders. A different assessment was that mild or moderate mental disorders in the general population totaled about 10 percent, and this increased to 20 percent after a disaster. Severe mental problems such as psychosis and depression typically affect 2-3 percent of the population.

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