Atypical hypoadrenocorticism presenting with hypoglycaemic seizures and bilateral cortical blindness in a dog

A 4-year-old, neutered, female Jack Russell terrier cross was presented for an acute onset of obtundation, severe hypoglycaemia and generalised tonic-clonic seizure activity. Baseline cortisol and subsequent adrenocorticotropic hormone stimulation testing confirmed hypoadrenocorticism, which was atypical as there were no electrolyte abnormalities present during hospitalisation or in the 6-month follow-up period. The dog responded to glucocorticoid monotherapy. To our knowledge, this is the only confirmed case of atypical hypoadrenocorticism presenting for hypoglycaemic seizures and bilateral cortical blindness in a dog. Hypoadrenocorticism (typical or otherwise) should be considered in dogs presenting for hypoglycaemic seizures.