Is it possible to formulate diagnostic criteria that distinguish hypersexual disorder from behavior that is merely symptomatic of another disorder (such as depression), as well as from normal sexual behavior? It needs to be established, for example, that there is excessive preoccupation with nonparaphilic sexually arousing fantasies, urges, or excessive sexual behaviors over a notable length of time (e.g., 6 months). In addition, it needs to be determined that symptoms are not better accounted for by another axis I disorder (e.g., a manic episode or delusional disorder, erotomanic subtype) and the symptoms are not due to the direct physiological effects of a substance (e.g., a drug of abuse or a medication) or a general medical condition. Finally, the judgment that the sexual fantasies, urges, or behaviors are excessive (i.e., represent psychopathology) must take into account normal variation as a function of age (e.g., in teenagers, high levels of preoccupation with sexual fantasy may be normative) and subcultural values (e.g., in patients who value celibacy, the presence of some sexual urges and associated distress may be normative), as well as the degree to which the symptoms are the source of distress or interfere with important areas of functioning.