Multimorbidity and comorbidity in psoriatic arthritis - a perspective.

This perspective article dealt with these different visions of the co-existence of other diseases in PsA, providing a distinction between them, not only for the impact on the treatment decision but also in how this concept might be incorporated into clinical trials design, choosing the right outcome measures for the patient-centric concept of multimorbidity. For this perspective, the authors searched PubMed and the Cochrane library for articles published.