**8.3 Bipolar disorder**

Bipolar disorders are associated with acute and strong emotive condition, which are episodic and known as mood episodes; these disorders are less common than major depression but are linked with increased risk of suicide. Effective targets in bipolar disorders for DBS are thought to be SCC, the nucleus accumbens, and slMFB, but studies are less [68].

### **8.4 Obsessive: compulsive disorder**

**Obsessive–compulsive disorder** (OCD) is a debilitating psychological condition, which is characterized by obsessions combined with time-consuming and subjectively anxiolytic behaviors. Several targets were proposed for OCD treatment, but STN DBS was found to be the most effective with significant reduction in OCD symptoms [69].

### **8.5 Anorexia nervosa**

Anorexia nervosa is a severe, prevalent, and has one of the highest mortalities among any psychiatric disorder. The limbic and emotional circuits are involved activating and upholding the disorder. The limited availability of treatment in refractory anorexia nervosa and positive outcomes of DBS in mood-related circuits have led the curiosity for DBS targets availability in anorexia nervosa condition. Several research articles are published on SCC DBS target with significant reduction in depression and anxiety [70]. However, further studies are needed for convincing target for DBS.
