Final answer:
The only FDA-approved type of medications used to treat this disorder are SSRIs.
Step-by-step explanation:
The subject of this question is Medicine and the grade level is High School.
The question is referring to the use of medications to treat a certain disorder, and specifically mentions that the only FDA-approved type of medications used to treat this disorder are SSRIs (Selective Serotonin Reuptake Inhibitors).
SSRIs such as Prozac, Zoloft, and Paxil are commonly used to treat depression as they work by blocking the reuptake of serotonin into the presynaptic neuron, resulting in increased serotonin levels in the central nervous system.