"My father could not even watch movies about the war because he could not sleep afterwards, " remembers his son, Sergei.

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"My parents worked nights and were worried about leaving us at home in case someone came in and hurt us, my father had to take tablets because he could not sleep, " he said.

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When he left he said he could not hold down a job and was forced to sleep rough.

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"I was so stressed out, I could not sleep at night, " he says.

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Some were worried that their homes would be devalued and others could not sleep because of a "persistent whine", he said.

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"I could not sleep the night we got the election results, " he confesses.

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