In this episode, Dr Kevin Fernando discusses diagnostic and management tips – as well as pitfalls to avoid – related to subclinical hyperthyroidism. Fatima is a 71-year-old woman who presents in primary care with non-specific malaise and a past medical history of atrial fibrillation, ischaemic heart disease and osteoporosis. On examination, there is no evidence of thyroid swelling. Her blood tests reveal a suppressed thyroid-stimulating hormone (TSH), but normal free thyroxine (FT4) and free triiodothyronine (FT3). Given Fatima's comorbidities, what should we do next?

In this episode, Kevin discusses the case of Louise, a 19-year-old who has been living with type 1 diabetes for the last 12 years and hypothyroidism for the last 8 years. She presents to us in primary care with a history of recurring unexplained hypoglycaemic episodes despite proactive adjustments to her insulin regimen. In addition to her insulin, she is taking levothyroxine 150 μg/day. She has not recently made significant changes to her diet or daily physical activity. Louise has also been experiencing light-headedness when rising from a sitting position. She has a BMI of 19 kg/m2, and a recent HbA1c value was 63 mmol/mol (7.9%). You record her sitting blood pressure as 119/67 mmHg and her standing value as 99/72 mmHg. You notice some patches of vitiligo on her face. What should we do next?

Kevin is joined by Drs Patrick Holmes, Amrit Lamba and Amar Puttanna to discuss the key take-home points from last week’s American Diabetes Association Virtual Scientific Sessions congress.