INTRODUCTION: Psoriasis is a common, chronic, immune-mediated inflammatory disorder. The disease is associated with several co-morbidities including cardiovascular disease, metabolic syndrome, and psychiatric disorders. It is important to identify and treat these co-morbidities because they have a strongly negative effect on the overall health of patients with psoriasis. Unfortunately, these co-morbidities are often overlooked and/or left untreated. Therefore, the aim of this review is to discuss the mechanisms of how co-morbidities are associated with psoriasis as well as implications for the clinic to be able to recognize such co-morbidities. Areas covered: This is a review of studies investigating and discussing co-morbidities of psoriasis and screening. Literature was retrieved by searching on the PubMed database using individual and combined search terms related to relevant co-morbidities. Expert commentary: Effective management of psoriasis involves targeting of both psoriasis and co-morbidities.