The thyroid gland, often shaped like a butterfly, acts as your body’s metabolic command center—regulating energy, mood, and organ function through the release of T3 and T4 hormones. For psychiatric NPs, understanding thyroid health is essential, as hypo- and hyperthyroidism can mimic or worsen psychiatric conditions like depression, anxiety, and cognitive dysfunction.
This section provides a concise yet powerful overview of thyroid function screening, interpretation of TSH, Free T3, Free T4 levels, and how abnormalities may alter psychiatric presentations or medication responses. It also outlines when to refer for endocrinology or co-manage with primary care. Recognizing the thyroid’s central role allows providers to rule out hidden contributors to psychiatric symptoms and ensure a holistic treatment plan.