There are usually no marks on the arm from the chickenpox vaccine. The chickenpox vaccine is a live vaccine that prevents chickenpox virus infection. The varicella vaccine is a protein that is usually completely absorbed by the skin and does not cause marks on the arm. It is usually used mainly for the vaccination of children over one year of age. Most of the marks on the arm are considered to be due to the BCG vaccination. Other vaccines do not leave a mark, or any other trace, in the vast majority of cases. The success of the BCG vaccination can be judged by the presence or absence of marks on the arm. About two weeks after BCG vaccination, the area will be red, swollen, clear and moist, and small ulcers will form. Usually, scabs and scratches will remain after 8 to 12 weeks. No special treatment is required and it is a normal adverse reaction. Patients who have received chickenpox vaccine should go to the hospital for targeted examination and treatment if they develop uncomfortable symptoms.