The diagnosis was supported by low cortisol and ACTH levels, along with indirect biochemical findings such as mild eosinophilia and borderline hyponatremia. Dynamic testing, such as the ACTH stimulation test, was not performed because basal cortisol and ACTH levels were unequivocally low in conjunction with compatible clinical features. The gene discussed is POMC; the disease is Increased total eosinophil count.