Hyoun-Ah Kim

Objective Polymyalgia rheumatica (PMR) is a chronic inflammatory rheumatic disease affecting older adults, with symptoms often overlapping with those of other conditions, thus making its diagnosis challenging.

PASS syndrome (PASS) is a rare and complex autoimmune disease that manifests as pyoderma gangrenosum (PG), acne vulgaris, hidradenitis suppurativa (HS), and ankylosing spondylitis (AS). Unlike other autoinflammatory syndromes such as PAPA and PASH, PASS does not have documented gene mutations, making diagnosis and treatment particularly challenging [1].

Corresponding Author Chang-Hee Suh Department of Rheumatology, Ajou University School of Medicine, Suwon, Korea Department of Molecular Science and Technology, Ajou University, Suwon, Korea Correspondence Chang-Hee Suh, Department of Rheumatology, Ajou University School of Medicine, 164 Worldcup-ro, Yeongtong-gu, Suwon 16499, Korea and Department of Molecular Science and Technology, Ajou University, 164 Worldcup-ro, Yeongtong-gu, Suwon 16499, Korea.