Editing Sexual dysfunction (section)

===Sexual desire disorders===
{{Main|Hypoactive sexual desire disorder}}
[[Sexual desire]] disorders or decreased [[libido]] are characterized by a lack of [[sexual desire]], [[libido]] for [[Human sexual activity|sexual activity]], or [[sexual fantasies]] for some time. The condition ranges from a general lack of sexual desire to a lack of sexual desire for the current partner. The condition may start after a period of normal sexual functioning, or the person may always have had an absence or a lesser intensity of sexual desire.

The causes vary considerably but include a decrease in the production of normal [[estrogen]] in women, or [[testosterone]] in both men and women. Other causes may be aging, fatigue, pregnancy, medications (such as [[selective serotonin reuptake inhibitor|SSRIs]]), or psychiatric conditions, such as [[Depression (mood)|depression]] and [[Anxiety disorder|anxiety]]. While many causes of low sexual desire are cited, only a few of these have ever been the object of empirical research.<ref>{{cite book | vauthors = Maurice W | date = 2007 | chapter = Sexual Desire Disorders in Men. | veditors = [[Sandra Leiblum|Leiblum S]] | title = Principles and Practice of Sex Therapy | edition = 4th | publisher = The Guilford Press | location = New York }}</ref>