Syphilis and syphilis rash are not the same. Syphilis is a multi-system, chronic infectious disease caused by syphilis spirochete infection, while syphilis rash is a rash caused by syphilis, which is commonly seen in patients with stage II and advanced syphilis. Syphilis is a chronic infectious disease caused by syphilis spirochete infection, and according to the course of the disease, it can be divided into Stage I syphilis, Stage II syphilis and Stage III syphilis, with different symptoms in different stages. Stage I syphilis can appear 2 to 3 weeks after infection, usually without systemic symptoms, and can be manifested as a hard chancre and sclerosing lymphadenitis. Stage II syphilis mainly occurs 3 to 4 weeks after the hard chancre has subsided, that is, 9 to 12 weeks after infection, which can lead to the appearance of syphilitic rashes, flat warts and other symptoms. Syphilis rash is characterized by red or reddish-brown papules, macules and plaques on the skin and mucous membranes all over the body, usually without itching or slight itching, and pustules and ulcers may appear on the skin and mucous membranes of some patients. Once the diagnosis of syphilis is confirmed, it is important to go to the hospital in a timely manner, under the guidance of the doctor to carry out reasonable treatment.