Final answer:
Antidepressant drugs, in addition to treating depression, are also commonly used for anxiety disorders and obsessive-compulsive disorder (OCD), particularly with medications like sertraline that are Selective serotonin reuptake inhibitors (SSRIs).
Step-by-step explanation:
In addition to depression, antidepressant drugs are also used in the treatment of anxiety disorders and obsessive-compulsive disorder (OCD). Antidepressants, such as sertraline, can help with these conditions by impacting neurotransmitter levels in the brain. For example, Selective serotonin reuptake inhibitors (SSRIs), like sertraline, work by increasing serotonin levels, which can help alleviate symptoms of both anxiety and OCD. While antidepressants are commonly prescribed for depression, their utility extends beyond this specific mental illness, offering relief for a range of psychiatric conditions.