Neurocognitive disorders describe decreased mental function due to a medical disease other than a psychiatric illness. In this chapter, cases related to substance-induced major neurocognitive disorder and major neurocognitive disorder due to Alzheimer’s disease are presented. Questions for consideration follow each case.

For a sexual problem to be considered a sexual dysfunction, the symptoms must be present for at least 6 months, cause significant distress, and cannot be caused exclusively by a nonsexual mental disorder (e.g., substance use, depression), significant relationship distress, medical illness, or medication. The three cases in this chapter represent various sexual dysfunctions, such as female sexual interest/arousal disorder and erectile dysfunction disorder, and their respective treatment. Questions for consideration follow each case.

Somatic symptom disorder is characterized by an extreme focus on physical symptoms (e.g., pain, weakness, fatigue) that causes major emotional distress and problems functioning. This chapter features two cases of somatic symptom disorder in two adult women. While their symptoms may not be traceable to a physical cause, they do cause excessive and disproportionate levels of distress and dysfunction.