Allgrove syndrome, rare autosomal recessive pathology, characterized by adrenocortical insufficiency, achalasia and alacrimia, rises usually in pediatric age, while its observation in adults is very rare. A clinical case appeared in an adult, observed by the Authors, is the reason to evaluate the etiopathogenetic mechanisms of this syndrome, with particular attention about potential role of genetic abnormalities and about others factors, again not well known.