281 © 2021 Indian Dermatology Online Journal | Published by Wolters Kluwer - Medknow Introduction Recent times have seen a sudden and justifiable interest in relating Periodontitis with a number of systemic conditions with the aim of improving understanding and overall patient care. However, in the midst of potentially lucrative associations it does become something of a caveat that to prove an association may make one lose sight of the quality of evidence supporting these claims. Psoriasis has been reported to have an association with Periodontitis, however, a meta‑analysis on the subject seemed to suggest otherwise in light of the evidence available on the matter. [1,2] Psoriasis is a chronic skin disease of unknown etiology presenting on the skin of affected people as erythematous scaly plaques, particularly on the extensor surfaces of knees and elbows, scalp, buttocks, and lower back. [3,4] In addition to the skin, it affects the joints Address for correspondence: Dr. Shipra Gupta, Unit of Periodontics, Oral Health Sciences Centre, Postgraduate Institute of Medical Education and Research (PGIMER), Chandigarh, India. E‑mail: shipra1472@gmail.com Access this article online Website: www.idoj.in DOI: 10.4103/idoj.IDOJ_445_20 Quick Response Code: Abstract Objectives: Psoriasis is a common, chronic, non‑communicable skin disease with no clear etiology or cure. Periodontitis is a chronic inflammatory condition which is now known to significantly influence various systemic diseases as an established risk factor. This study aimed at comparatively evaluating the periodontal status of Psoriatic patients vis. a vis. that of age and gender matched systemically healthy volunteers. An attempt was also made to explore a possible association, if any, amongst the two diseases. Materials and Methods: Forty two residents of Chandigarh, suffering from Psoriasis and attending the Psoriasis Clinic of Department of Dermatology & Venereology, Post Graduate Institute of Medical Education & Research, Chandigarh were recruited over a period of 10 months (Case group) and their periodontal status was compared with forty two age and gender matched systemically healthy volunteers (Control group) randomly selected from the Out Patient Department of Periodontics, Dr. Harvansh Singh Judge Institute of Dental Sciences & Hospital, Panjab University, India . Their serum IL‑33 levels were evaluated and compared in an attempt to identify an underlying common pathological pathway. Results: The periodontal status was comparable in the two groups in terms of the debris index (p = 0.932), calculus index (p = 0.088), plaque index (p = 0.097), and mean clinical attachment loss (p = 0.401). A higher bleeding points index was recorded amongst healthy individuals as compared to the Psoriasis group, the difference being statistically significant (p = 0.001). The mean number of teeth were more in the Psoriasis group as compared to the healthy group (p=0.034). IL 33 levels were also not significantly different (p = 0.491). Conclusion: Contrary to currently available evidence in literature, the study did not find a statistically significant association between Psoriasis and Inflammatory Periodontal Disease. Keywords: Association, inflammation, periodontal disease, periodontitis, psoriasis Psoriasis and Periodontitis: Exploring an association or lack thereof Brief Report Shipra Gupta, Sunil Dogra 1 , Gurparkash Singh Chahal 2 , Savita Prashar 3 , Angadveer Pal Singh 2 , Mili Gupta 3 Unit of Periodontics, Oral Health Sciences Centre, Postgraduate Institute of Medical Education and Research, 1 Department of Dermatology and Venereology, Postgraduate Institute of Medical Education and Research, Departments of 2 Periodontics and 3 Biochemistry, Dr. Harvansh Singh Judge Institute of Dental Sciences and Hospital, Panjab University, Chandigarh, India How to cite this article: Gupta S, Dogra S, Chahal GS, Prashar S, Singh AP, Gupta M. Psoriasis and periodontitis: Exploring an association or lack thereof. Indian Dermatol Online J 2021;12:281-4. Received: 10-Jun-2020. Revised: 07-Aug-2020. Accepted: 13-Sep-2020. Published: 22-Feb-2021. This is an open access journal, and arcles are distributed under the terms of the Creave Commons Aribuon‑NonCommercial‑ShareAlike 4.0 License, which allows others to remix, tweak, and build upon the work non‑commercially, as long as appropriate credit is given and the new creaons are licensed under the idencal terms. For reprints contact: WKHLRPMedknow_reprints@wolterskluwer.com of the spine and other joints, known as psoriatic arthritis. Periodontal diseases are caused by microbial plaque, are chronic in nature, and no longer thought to be a localized entity but one which significantly influence the systemic condition of an individual. They present clinically as destruction of tissues and bone surrounding the teeth, leading to mobility and finally tooth loss. The World Health Organization (WHO) Global Report on Psoriasis, Geneva 2016 acknowledges the association between Periodontal disease and increased risk for Psoriasis. [1] Association between the two diseases may be due to common underlying pathological pathways. In periodontal diseases, IL‑33 has an osteoclastogenic role by inducing osteoclast differentiation and increased production of bone resorption factors (c‑Src