The new 2022 ERS/ESC PAH guideline has just been published recently. There were important updates in definition, classification, diagnostic algorithm as well as treatment suggestions when compared with the last ERS/ESC PAH guidelines published back in 2015. In this talk, we will bring you through some of the important updates based on the latest evidence in the field of PAH. The important updates include lowering down the threshold for diagnosis of PAH, new subgrouping and removal of some diseases in the PAH classification. Besides, we will also look into the newly improved diagnostic strategies aiming at early detection and fast track referrals for high-risk patients.