So-called dermatitis, it is an infection involving the superficial lymphatic vessels of the dermis, and the main causative agent is group A beta-hemolytic streptococcus. The triggering factor is caused by local infection, but also by hematogenous infection Treatment includes: systemic therapy: penicillin is preferred for a course of 10 to 14 days. Macrolide antibacterial drugs can be used for those who are allergic to penicillin. High-dose antimicrobial therapy is effective during the active phase of lymphangitis in patients with recurrent dermatophytosis, but needs to be continued in small intermittent doses for a longer period of time to achieve full effect. Topical treatment: Various antimicrobial drugs can be applied topically to the surface of the lesion. Compression therapy can reduce lymphedema and help prevent recurrence. It can be supplemented with physical therapy, such as narrow-wave ultraviolet radiation. Surgical treatment: Plastic surgery may be recommended for persistent hard edema where the above treatment options are ineffective. Prevention of the disease: Skin lesions that can lead to entry of causative organisms such as scratching, breakage or trauma of eczema should be actively sought and treated once these skin lesions are identified. The most common, easily overlooked and untreated susceptibility factor is tinea pedis, which can be a gateway for bacteria to enter the skin. Patients should be instructed not to pick their nose.