Auricular perichondritis (auricular chondritis) can be classified as either plasmacytic or purulent. The lesions are either serous exudate (plasmacytic) or pus formation (purulent) between the cartilage and cartilage membrane. Plasmacytoid chondritis, also known as pseudocyst of auricle, is an aseptic inflammatory reaction of the cartilage membrane of unknown etiology and may be related to mechanical irritation from repeated minor trauma such as pressure and touch. Septic chondromalacia is an acute purulent inflammation of the auricular cartilage membrane and cartilage, often due to trauma, surgery, frostbite, burns, and secondary infection of the auricular hematoma. It should be treated seriously because it can cause cartilage necrosis and lead to auricular deformity. Plasmacytoid chondromyelitis: aspiration under aseptic operation, injection of sclerosing agent after aspiration, etc. To prevent recurrence of fluid accumulation, local pressure bandage should be applied; liquid nitrogen is also used for cryotherapy after aspiration, and most of them can be cured by freezing 1-2 times. It can be combined with magnetic therapy, ultra-short-wave transthermal physiotherapy. Septic chondromyelitis: systemic application of sufficient amount of effective antibiotics to control infection. Physiotherapy can be used in the early stage. After abscess formation, incision and drainage should be performed to thoroughly remove pus, granulation tissue and necrotic cartilage. In case of serious deformity, plastic surgery can be performed. Examination and testing The skin of the auricle is congested and swollen, painful to the touch, and the skin temperature is elevated. In cases of pus, puncture and pus aspiration are possible. Differential diagnosis Attention should be paid to the differentiation from broken ear sores (purulent auricular chondromyelitis). Ear sores have localized redness, swelling, heat, pain, penetration, pus exudation, and gradual decay of the cartilage of the ear shell, even defective.