性变态的病因尚不明确,它们包括生物遗传方面、心理学方面、环境和社会等方面因素的影响。性变态患者对于正常的性活动通常没有要求,甚至心怀恐惧,他们的变态性行为常具有强迫性和反复性,他们的自我控制和自我保护能力往往较差,但并非时 The etiology of sex abnormalities is not clear, they include biological genetic aspects, psychology, environmental and social aspects of the impact. Sexually Transmitted Diseases Patients usually have no demands or even fear on normal sexual activities. Their perverted behaviors are often obsessive and repetitive. Their self-control and self-protection ability are often poor, but not when