RESUMO
Erectile dysfunction (ED) is the inability to achieve or maintain an erection that is required for satisfactory sexual performance, and affects a considerable proportion of men around the globe at least occasionally. Although roles for nonendocrine and endocrine pathways have been propose, presence of comorbidities, psychogenic factors may contribute to its development. Large number of published reports link many commonly prescribed drugs with sexual dysfunction. Many common drugs such asanti-hypertensive, anti-psychotic, and anti-histaminic are linked with iatrogenic ED. On the other hand, psychogenic ED may be wrongly perceived to be of iatrogenic origin. While dealing a subject with ED it is important for the clinicians to take a detailed medical, surgical, sexual and drug/substance abuse history. In this article, we have described two such cases which would reflect the importance of determining the cause of ED before initiating treatment.