Autoimmune polyglandular syndrome type 2 and recurrent depression

Autoimmune polyglandular syndrome type 2 (APS-2) features autoimmune Addison's disease, autoimmune thyroid disease, and/or type 1 diabetes mellitus. Addison's disease is occasionally associated with depressive symptoms, therefore patients with APS-2 might present primarily in a psychiatric clinic. Such atypical primary presentation can possibly lead to delayed and/or inadequate diagnosis and management.

A 57-year-old female patient was referred to our psychiatric clinic from an internal medicine hospital presenting severe depressive symptoms. Upon admission, she complained of sadness, loss of interest (anhedonia) and drive, nausea, and loss of appetite. Physical examination revealed generalized hyperpigmentation. Laboratory investigations revealed hyponatremia, hypocalcemia, macrocytic anemia along with treated hypothyroidism, and partially treated adrenal insufficiency.

A diagnosis of the APS-2 was made. Electroconvulsive therapy (ECT) was mandatory and a complete regression of the affective symptoms was achieved.

Organic workout in psychiatry is essential to detect diseases symptomatically or semiologically related to depression. In our case, hyperpigmentation, hypothyroidism, and adrenal insufficiency linked to depressive symptoms led to APS-2 diagnosis. ECT was challenging due to the avoidance of etomidate by the anesthesiologists, due to adrenal insufficiency. The adjustment of ECTs' energy dosage (to avoid too short and ineffective seizures) and optimization of adrenal and thyroid function was essential to reverse the severe depressive syndrome.