Neurobiological Underpinnings to Hypersexual Disorder

Inclusion criteria

• Male
• At least 18 years of age,
• Fluent in the Swedish language
• Patients will meet diagnostic criteria for hypersexual disorder and will not have started with any psychotherapy or psychological treatment.
• Controls will be physically and psychologically healthy, and show no indication of clinical hypersexuality

Exclusion criteria

For both patients and controls any reported medical or clinical condition known to affect brain structure and function, test performance, or associated with risks for the MRI environment will be exclusionary. The investigators will exclude for the following:

• Severe neurological/psychiatric diseases or conditions (e.g., major depression, bipolar disorder, ADHD, autism, anxiety/panic disorder, obsessive compulsive disorder, personality disorder, Parkinson's disease, epilepsy, PTSD/chronic stress/burnout syndrom, Alzheimer's disease)
• Gender identity disorder/gender dysphoria
• Chronic pain conditions
• Impared vision, or other vision problems that cannot be corrected with MR-safe equipment.
• Hearing impairments, or problems with other senses
• History of severe brain damage/injuries
• Claustrophobia
• Having metal implants, a pacemaker, metallic braces or other MRI contra-indications
• Alcohol/drug dependence/abuse, eating disorder, pathological gambling, during the past 6 months.
• HIV and Hepatitis C/B, if the condition is untreated or virus levels detectable.
• Untreated endocrinologic diseases
• Medication: bensodiazepine, antipsychotics, mood stabilizers, centrally acting sympathicomimetics, SSRI (if use started less than 3 months ago). Any medication or pharmaceutical drug that interferes with sex hormone production or metabolism, i.e. ketoconazol, cyproteronacetate, spironolactone and similar drugs.

Note: There is a potentially higher prevalence of comorbidities and medication use in patients. To facilitate recruitment and study completion, the investigators may include subjects that report specific conditions at the discretion of the principle investigator. In those cases, corresponding information will be recorded in order to control for potential confounders.