Are skin diseases contagious? Dermatologists encounter too many of these questions in their work. In fact, this question not only plagues dermatology patients, their families and friends, but even confuses some health care workers. When looking at the common or rare skin lesions on dermatologic patients, the first reaction of most people is fear of infection due to contact with the patient’s skin. It is not surprising that this is a common occurrence. There are many different types of skin diseases, and at least 3,000 types of skin diseases have been identified. Among them, only a very small percentage of skin diseases are contagious. And those common skin diseases, most of them are not contagious. For example: psoriasis, vitiligo, eczema, dermatitis, and drug rash. The infectious skin diseases according to some infectious diseases, according to the different pathogens can be divided into the following categories: 1, viral skin diseases common flat warts, common warts, condyloma acuminata, herpes simplex, genital herpes, AIDS and more in children / adolescents infectious molluscum contagiosum, hand, foot and mouth disease, chicken pox, rubella, measles. 2.Fungal skin diseases ringworm, ringworm nail, ringworm of the body. 3.Bacterial (coccus, bacillus) skin diseases Impetigo, skin tuberculosis, anthrax. 4.Parasitic/insect skin diseases scabies, pubic lice disease, skin cysticercosis. 5. Other infectious skin diseases Mainly venereal diseases, such as syphilis, gonorrhea, soft chancre, etc. Through the above introduction, I believe that you have a basic understanding of whether skin diseases are contagious. Science is like a bright light that illuminates the darkness and brings warmth to human beings. Fear and aversion are “normal reactions”, but they should not appear in the psychological state. It is these “normal human reactions” that prevent patients from integrating into society and, in some cases, greatly reduce their quality of life. Although most dermatological diseases are not fatal, a large percentage of dermatological patients carry a heavy burden of thought, and some patients may even react in an extreme way by committing suicide. Therefore, we are here to call for the care of dermatologists. Let’s treat them like normal people, shake hands and hug them normally, have happy dinners and talk with them freely. Share their sorrow, share their happiness.