根据交通部调查,个人对晕动病的易患性似乎形成于童年时期的某个时候,青春期前后到达峰值,此后在成人期略有下降。易患性可能会在中老年阶段进一步下降,但是否存在于整个年龄段尚无定论。实际呕吐在青春期后似乎不经常出现。[9]Turner M, Griffin MJ. Motion sickness in public road transport: passenger behavior and susceptibility. Ergonomics. 1999;42:444-461.http://www.ncbi.nlm.nih.gov/pubmed/10048305?tool=bestpractice.com不同人对晕动病的易患性存在很大的差异,但只有具有非功能性前庭系统的人才真正免疫。在高度诱导性环境中,例如在风大浪急的海面上乘坐救生筏时,所有人都会有晕动病。尽管尚未就晕动病对日常生活活动的影响进行广泛调查,但估计约有三分之一的人在乘坐交通工具时会经历明显的晕动病症状。在患者具有最高水平易患性的极端情况下,适当运动就可能会诱发严重的晕动病,引起恶心、眩晕及头痛等失能不适感,这些不适感可能会持续整个运动期间及运动后的数小时。女性比男性更容易出现晕动病;女性表现出的呕吐发生率更高,且报告的恶心等症状的发生率更高。[10]Flanagan MB, May JG, Dobie TG. Sex differences in tolerance to visually-induced motion sickness. Aviat Space Environ Med. 2005;76:642-646.http://www.ncbi.nlm.nih.gov/pubmed/16018346?tool=bestpractice.com[11]Kennedy RS, Lanham DS, Massey CJ, et al. Gender differences in simulator sickness incidence: implications for military virtual reality systems. Safe J. 1995;25:69-76.[12]Klosterhalfen S, Kellermann S, Pan F, et al. Effects of ethnicity and gender on motion sickness susceptibility. Aviat Space Environ Med. 2005;76:1051-1057.http://www.ncbi.nlm.nih.gov/pubmed/16313141?tool=bestpractice.com 渡船乘客中,呕吐的女性与男性风险比率为 5:3。[13]Lawther A, Griffin MJ. A survey of the occurrence of motion sickness amongst passengers at sea. Aviat Space Environ Med. 1988;59:399-406.http://www.ncbi.nlm.nih.gov/pubmed/3390095?tool=bestpractice.com有证据显示,中国人的易患性略高。[12]Klosterhalfen S, Kellermann S, Pan F, et al. Effects of ethnicity and gender on motion sickness susceptibility. Aviat Space Environ Med. 2005;76:1051-1057.http://www.ncbi.nlm.nih.gov/pubmed/16313141?tool=bestpractice.com[14]Stern RM, Hu S, LeBlanc R, et al. Chinese hyper-susceptibility to vection-induced motion sickness. Aviat Space Environ Med. 1993;64: 827-830.http://www.ncbi.nlm.nih.gov/pubmed/8216144?tool=bestpractice.com