The lesions of skin diseases are characterized by shallow location

extreme thinness

variety and complex manifestations. These characters limit the clinical application of conventional ultrasound. With the continuous increase in ultrasound probe frequency and the accumulation of examination experience

ultrasound is playing an increasingly important role in the diagnosis and management of skin diseases. In the past 2021

skin ultrasound has made significant progress in many aspects

such as skin tumors

inflammatory skin diseases

artificial intelligence diagnosis

basic research

standardized training and popularization. Therefore

this article summarized the latest advances in 2021 of skin ultrasound.