It is clear that sexual difficulties are extremely common and there is a considerable need for therapy services to help the large number of couples or individuals who experience such problems. Although it is difficult to estimate the exact incidence of sexual disorders, studies suggest that between 30% and 50% of couples experience some form of sexual dysfunction (Stuntz, 1988). For example, Frank et al. (1978) reported that 63% of wives and 40% of husbands in their sample of US couples experienced at least one type of sexual dysfunction. An even higher percentage reported sexual difficulties such as difficulty relaxing during sex and inadequate amounts of foreplay before intercourse. A study caried out in Sweden by Nettelbladt and Uddenberg (1979) also found that 40% of men in their sample reported a ‘tendency’ towards sexual dysfunction. Garde and Lunde (1980a) found that 35 % of a random sample of 40-year-old women in Denmark reported current sexual problems. It seems therefore that studies suggest a remarkably high frequency of sexual dysfunction in the general population.
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