ABSTRACT
A considerable amount of available information regarding sexual disorders (SD) has been challenged during the last few decades. SD have long been defined as persistent and recurrent difficulties that interfere with one or more stages (desire, arousal, and orgasm) of human sexual response cycle. Today, even this gross definition has been subject to criticisms. Clinicians and researchers no longer want to base definitions of SD on sexual response cycles defined initially by Masters & Johnson (1966) and modified later by Kaplan (1974), as these cycles follow a linear pattern and are not likely to be analogous in men and women.
