Dermatological diseases are a general term for diseases occurring in the skin and skin appendages, including: 1. Infectious dermatological diseases: including bacterial infectious dermatological diseases, fungal infectious dermatological diseases and viral infectious dermatological diseases. Bacterial infectious skin diseases include folliculitis, impetigo, etc.; fungal infectious skin diseases include ringworm, ringworm, tinea capitis, etc.; viral infectious skin diseases include chickenpox, herpes zoster, etc.; 2. Non-infectious skin diseases: related to physical and chemical factors, immune factors, diet, etc.