is a rare self-diagnosed skin condition reported primarily in white populations in the united states. it has been described by a journalist as "a socially transmitted disease over the internet". vegetative-vascular dystonia can be considered an example of somatic condition formally recognised by local medical communities in former soviet union countries, but not in western classification systems. its umbrella term nature as neurological condition also results in diagnosing neurotic patients as neurological ones, in effect substituting possible psychiatric stigma with culture-bound syndrome disguised as a neurological condition. refugee children in sweden have been known to fall into coma-like states on learning their families will be deported. the condition, known in swedish as uppgivenhetssyndrom, or resignation syndrome, is believed to only exist among the refugee population in sweden, where it has been prevalent since the early part of the 21st century. in a 130-page report on the condition commissioned by the government and published in 2006, a team of psychologists, political scientists, and sociologists hypothesized that it was a culture-bound syndrome. a startle disorder similar to latah, called imu (sometimes spelled imu:), is found among ainu people, both sakhalin ainu and hokkaido ainu. a condition similar to piblokto, called menerik (sometimes meryachenie), is found among yakuts, yukaghirs, and evenks living in siberia. the trance-like violent behavior of the viking age berserkers – behavior that disappeared with the arrival of christianity – has been described as a culture-bound syndrome.