What is the typical titer for third-stage syphilis?

Written by Zhu Zhu

Dermatology

Updated on May 21, 2025

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The titers of tertiary syphilis are generally lower than those of primary and secondary syphilis. Syphilis is divided into three stages. During the primary and secondary stages, the reactivity of the Treponema pallidum is higher, thus the titers are also higher. However, the titers for tertiary syphilis often appear lower or even negative. The level of syphilis titers is not significantly related to the duration of the illness. Interestingly, tertiary syphilis generally occurs when the disease has already progressed for more than two years, which results in lower titers.

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Written by Zhu Zhu

Dermatology

33sec

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Will third-stage syphilis be asymptomatic?

In the case of third-stage syphilis, it is generally not asymptomatic, as it is already a late stage of the disease that invades multiple systems, such as the musculoskeletal system, nervous system, and even the cardiovascular system. When these systems are invaded, they become damaged, leading to various complications. Therefore, third-stage syphilis typically presents with various signs of organ dysfunction, and it is unlikely to be without any symptoms once it has progressed to this stage.

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Written by Zhu Zhu

Dermatology

1min 18sec

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Early symptoms of syphilis

Syphilis is a sexually transmitted disease caused by the bacterium Treponema pallidum, with the disease course within two years referred to as early syphilis. Not all infected individuals display symptoms; asymptomatic syphilis is also known as latent syphilis. Symptomatic early syphilis primarily manifests as either primary or secondary syphilis. The main symptom of primary syphilis is a chancre, typically occurring as a clear-bordered ulcer in the genital area. It is flesh-colored and neither painful nor itchy. Several weeks after the chancre heals, secondary syphilis can develop, characterized by a rash that may resemble other skin conditions. Common manifestations include macules, papular macules, copper-red papules on hands and feet, flat condyloma, and syphilitic alopecia. Individuals who suspect they may have been exposed to syphilis should visit a hospital for a blood test to detect syphilis antibodies. Antibodies can usually be detected four weeks after infection, and a negative result three months later can rule out syphilis.

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Written by Zhang Jian Bo

Dermatology

58sec

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What are the early symptoms of syphilis?

Syphilis is divided into overt and latent syphilis. Latent syphilis, regardless of whether it is early or late stage, shows no symptoms at all and can only be confirmed by blood testing. The symptoms in the early stage are mainly those of overt syphilis, primarily manifestations of primary syphilis. The stages of primary, secondary, and tertiary syphilis begin with the appearance of a lesion at the site of infection, typically about 0.5 to 1 centimeter in diameter, with a hard, dark red nodule that feels like cartilage. The surface may have ulcers; it may be painless, or there may be no pain at all. Subsequently, nearby lymph nodes may become enlarged. This swelling of the lymph nodes is characterized by being painless, usually unilateral, with no redness or rupture. These are the clear symptoms of overt primary syphilis. If treated properly at this stage, recovery is generally rapid.

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Written by Zhu Zhu

Dermatology

37sec

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Can tertiary syphilis be contagious?

Third-stage syphilis is contagious. Although the titers in third-stage syphilis might be lower than those in the first and second stages, it still has the ability to infect others. Moreover, third-stage syphilis can easily lead to many complications, affecting other tissues and organs of the body. Therefore, third-stage syphilis is very serious. Once third-stage syphilis occurs, one must be particularly vigilant, seek timely treatment in a reputable hospital early, enhance their immunity, and avoid having a history of unprotected sexual activity.

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Written by Qu Jing

Dermatology

1min 58sec

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How long is the latency period of syphilis?

Syphilis is a chronic infectious disease caused by the bacterium Treponema pallidum (TP), primarily transmitted through sexual contact and blood. The impact of syphilis is significant as it can affect all bodily tissues and organs, or can be transmitted through the placenta, leading to stillbirth, miscarriage, premature birth, and congenital infections. When syphilis is suspected, due to its complex clinical manifestations, a detailed medical history should be taken, a thorough physical examination conducted, and repeated laboratory tests performed to ensure an early and accurate diagnosis. It is important to trace back to any unprotected sexual contacts within the last six weeks and to routinely screen the sexual partners of patients for syphilis as well. Syphilis is divided into three stages: The diagnosis of primary syphilis is mainly based on the history of exposure, the incubation period (six weeks), typical clinical manifestations, and laboratory tests, noting that a negative syphilis serology result alone should not exclude the diagnosis of syphilis. The diagnosis of secondary syphilis primarily relies on the history of exposure, typical clinical manifestations, especially skin and mucosal lesions, combined with laboratory tests. The diagnosis of tertiary syphilis is mainly based on the history of exposure, typical clinical manifestations, and laboratory tests. Neurosyphilis can also be assessed through cerebrospinal fluid examination. Congenital syphilis primarily requires a maternal history of the disease, combined with typical clinical manifestations and laboratory tests for diagnosis.