e a side effect of some medications, such as certain anti-depressants. Among the other problems that can occur during sexual response cycle are premature ejaculation, which the DSM-IV defines as the male’s inability to inhibit orgasm as long as desired, and vaginismus, involuntary muscle spasms in the outer part of a woman’s vagina during sexual excitement that make intercourse impossible. Again, the occasional experience of such problems is common; the DSM-IV considers them dysfunctions only if they are “persistent and recurrent”.” (Morris & Maisto, 1999)...
