OCD has been linked to a change in which neurotransmitter?

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Multiple Choice

OCD has been linked to a change in which neurotransmitter?

Explanation:
OCD is most closely linked to reduced serotonin signaling in the brain's cortico-striato-thalamo-cortical circuits. This is why selective serotonin reuptake inhibitors (SSRIs) are the first-line treatment—they increase synaptic serotonin and often diminish obsessions and compulsions. So the neurotransmitter change associated with OCD is decreased serotonin. Increased serotonin isn’t typically aligned with OCD’s neurobiology, and while dopamine and norepinephrine can affect related circuits, they are not the primary link described in this context.

OCD is most closely linked to reduced serotonin signaling in the brain's cortico-striato-thalamo-cortical circuits. This is why selective serotonin reuptake inhibitors (SSRIs) are the first-line treatment—they increase synaptic serotonin and often diminish obsessions and compulsions. So the neurotransmitter change associated with OCD is decreased serotonin. Increased serotonin isn’t typically aligned with OCD’s neurobiology, and while dopamine and norepinephrine can affect related circuits, they are not the primary link described in this context.

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