A 17-year-old girl with no previous health issues went to the emergency room for vomiting, shortness of breath, and rapid heartbeat, leading to a diagnosis of new onset type 1 diabetes mellitus (T1DM) after finding high blood glucose levels.
During her hospital stay, she experienced unexpected low blood sugar episodes, excess urination with glucose, and low sodium levels, prompting further investigation.
Elevated adrenocorticotropic hormone (ACTH) levels revealed Addison's disease, marking a rare case of T1DM and Addison's disease occurring together, underscoring the need for a broad diagnostic approach in unusual cases.