What is Syphilis?
Syphilis is a bacterial infection caused by the bacterium Treponema pallidum. This infection is mainly transmitted through sexual intercourse involving the infected person. Syphilis infection can be contracted through small cuts or the mucous membranes in the genitals, anus, rectum, and mouth of the patient.
What makes syphilis infections very hard is the fact that it goes through different phases, where at times symptoms will go away without treatment. However, despite the disappearance of symptoms, the bacteria causing the illness remain in the body. This potentially damages various organs and body systems over time. The disease is very infectious and is commonly referred to as a sexually transmitted infection.
Syphilis develops through different stages:
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Primary Syphilis
Primary syphilis is the first stage of syphilis infection and usually occurs about 3 weeks after exposure to the bacteria. It may, however, occur any time within 10 and 90 days.
Primary syphilis can be characterised as follows:
- Single painless ulcer
- Sore that is firm and round in shape
- Swelling of lymph nodes
- Typically heals on its own within 3 to 6 weeks, even without treatment
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Secondary Syphilis
Secondary syphilis occurs weeks to months after the primary infection, once the bacteria spread through the bloodstream. Some typical symptoms associated with secondary syphilis include:
- Characteristic skin rash - A non-itchy rash may develop, often involving the palms of the hands and soles of the feet.
- Fever - Fever develops because of the release of chemicals, which increases the body temperature in the brain centre that regulates it.
- Tiredness - With the immune response underway, your body uses a lot of energy fighting the infection.
- Muscle pains - When the bacterium circulates throughout your body, the immune system responds with inflammation in different parts of the body, including muscles and joints.
- Patches of hair loss - Hair sheds because inflammation prevents hair follicles from working properly, resulting in moth-eaten alopecia.
- Condyloma lata - Broad, moist, wart-like lesions that may develop in warm, moist areas of the body.
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Latent Syphilis
During latent syphilis, all the signs and symptoms fade away since the immune system partially blocks the bacteria from replicating. However, the immune system cannot destroy all bacteria. The latter continue their dormant existence within body tissues.
- Early latent syphilis - Refers to latent infection acquired within the previous 12 months.
- Late latent syphilis - Occurs after the first year after contracting syphilis and lasts for life without any symptoms.
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Tertiary Syphilis
This type of syphilis is considered the most serious one as it occurs many years or even decades after an initial infection with syphilis. This disease leads to infections of several organs, including:
- Brain
- Heart
- Blood vessels
- Eyes
- Liver
- Bones
- Nervous system
Types of Syphilis
Syphilis progresses slowly and is classified into various types, each characterised by specific symptoms and complications.
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Neurosyphilis
Neurosyphilis is an infection resulting from bacteria that infect the brain as well as the spinal cord.
- Dementia - There is inflammation of the brain cells that prevents effective signals from reaching the neurons, and ultimately, one loses memory, concentration, judgment, and even behavior.
- Paralysis - There is inflammation of the nerves in the spinal cord, causing the malfunctioning of the muscles due to the interference of nerve impulses.
- Seizures - There is inflammation of the brain that interferes with its electrical activity, leading to seizures.
- Balance Problems - There is inflammation of the spinal cord nerves, affecting one coordination and walking.
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Ocular Syphilis
This type of syphilis affects the eyes and can lead to eye problems. Among the following symptoms are possible:
- Pain in the eye
- Redness
- Blurred vision
- Photosensitivity
- Loss of vision
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Cardiosyphilis
Syphilitic heart disease results from a late stage of syphilis infection of the heart and blood vessels, such as the aorta, years after getting syphilis infection.
- Chest pain
- Breathing problems
- Fatigue and tiredness
- Heart palpitation or abnormal heartbeats
- Swelling of the legs and feet
- Feeling faint
- Signs of heart failure
- Signs of an aortic aneurysm, for instance, sharp chest or back pains
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Congenital Syphilis
Congenital syphilis occurs when Treponema pallidum is transmitted from an infected pregnant woman to her fetus, most commonly through the placenta during pregnancy.
Symptoms in Infants
- Hand and foot rashes
- Runny nose
- Yellowing skin
- Enlarged liver and spleen
- Problems feeding
- Low weight
- Swollen bones or malformed bones
Late Stage Symptoms in Children
- Hearing loss
- Visual problems
- Malformed teeth and bones
- Intellectual disability
How Common is Syphilis in India?
Syphilis continues to occur in India, particularly among sexually active adults and certain high-risk populations. The true burden of disease is difficult to estimate because many infections are asymptomatic and may go undiagnosed. Public health measures such as regular screening, early treatment, partner notification, and safer sex practices remain important for controlling transmission.
People who engage in sexual activities with several partners are usually susceptible to syphilis infection. Education, proper testing, and safe sexual activities can prevent syphilis.
What are the Symptoms of Syphilis?
The symptoms of syphilis can vary depending on the stage of the infection. While many symptoms are common in both men and women, some may affect specific areas of the body.
| Symptoms in Males | Symptoms in Females |
| Sores or ulcers on the penis and scrotum | Sores or ulcers in the vagina and cervix |
| Skin rashes on the palms and soles of the feet | Pelvic pain |
| Enlarged lymph nodes | Skin rashes |
| Excessive hair loss | Flu-like symptoms |
| Fever and tiredness | Sexually transmitted ulcers |
Common Symptoms in Both Men and Women:
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Skin rashes
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Enlarged lymph nodes
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Fever and fatigue
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Flu-like symptoms
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Hair loss in patches
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Painless sores or ulcers at the site of infection
Note: Some individuals may not experience noticeable symptoms, especially during the latent stage of syphilis. Early diagnosis and treatment are important to prevent complications and transmission.
What Causes Syphilis?
Syphilis is caused by an infection with Treponema pallidum. This type of bacteria enters the body through tiny cuts and mucosal linings during sexual encounters. These bacteria multiply rapidly when in contact with infected areas.
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Neurosyphilis
Neurosyphilis is an infection resulting from bacteria that infect the brain as well as the spinal cord.
- Vaginal Intercourse - Direct contact with the ulcers, which happen during intercourse, makes it easier for syphilis to be passed on because microscopic ulcers allow for bacterial spread.
- Anal Intercourse- High chances exist for transmission of syphilis through anal intercourse because the skin covering the anus is very thin and easily torn.
- Oral Intercourse- The bacteria can also be passed on through the mouth during sexual intercourse when sores develop in or around the genital region and lips.
- Mother-to-Child Transmission- Untreated syphilis during pregnancy can transmit the infection to the fetus, most commonly through the placenta.
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Risk Factors
- Sexual Activities without Condoms - Nearly 30-60% of sexual contact with an infected individual may result in syphilis. Not using condoms increases the risk of exposure to infectious syphilis sores during sexual contact.
- Multiple Sexual Partnerships - An individual with many sexual partners is likely to come into contact with someone suffering from syphilis.
- Having HIV Infection - People living with HIV may have a higher risk of acquiring syphilis and other sexually transmitted infections because they often share similar risk factors.
- History of Other STIs - One's history of having been infected with other STIs suggests exposure to risky sexual environments.
- Neglecting Medical Screening - Most cases of syphilis among people happen in cases where the patients are unaware that they are sick.
What are the Complications of Syphilis?
Untreated syphilis can lead to several problems involving different body parts.
| Affected Area | Potential Complications |
| Brain and Nervous System | Stroke, dementia, seizures, memory problems, muscle weakness that may lead to paralysis |
| Heart and Blood Vessels | Aortic aneurysm, damaged heart valves, cardiovascular collapse |
| Eyes and Ears | Blindness, deafness, balance problems |
| During Pregnancy | Spontaneous abortion (miscarriage), stillbirth, premature birth, abnormal fetal development, neonatal death |
When Should I see My Healthcare Provider?
Consult a healthcare provider as soon as possible if you experience any of the following symptoms:
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High fever that does not subside
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Unusual sores, ulcers, or abnormalities in the genital area
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Skin rashes, especially after sexual contact
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Pain or burning sensation during urination
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Swollen lymph nodes (glands)
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Fever accompanied by genital sores or ulcers
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Vision problems, such as blurred vision or eye pain
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Symptoms affecting the nervous system, including headaches, numbness, difficulty coordinating movements, or confusion
How is Syphilis Diagnosed?
The diagnosis of syphilis involves both physical examinations and lab tests.7
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Blood Tests:
Blood tests are commonly used to diagnose syphilis. They show antibodies reacting with the bacterium. Tests used include:
- VDRL Test
- RPR Test
- TPHA Test
- FTA-ABS Test
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Fluid from Syphilitic Sores:
Fluid from Syphilitic Sores- Fluid samples taken from sores can reveal the bacterium through microscopy.
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Lumbar Puncture:
This procedure is performed if neurosyphilis is a possibility.
How is Syphilis Treated?
Antibiotic therapy is the standard treatment for syphilis. The type and duration of treatment depend on the stage of infection and the individual's overall health.
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Early-stage syphilis: Early-stage syphilis is usually treated with a short course of antibiotic therapy.
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Late-stage syphilis: Later stages of syphilis may require a longer duration of antibiotic treatment and regular follow-up.
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Neurosyphilis and ocular syphilis: Severe complications may require hospital-based treatment and close monitoring.
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Pregnant women: Prompt treatment during pregnancy can help reduce the risk of transmission to the baby.
Alternative treatment options may be considered for people who cannot receive the standard therapy, depending on their medical history and healthcare provider's recommendations.
What is the Prognosis for Syphilis?
In most cases, the prognosis of syphilis can be described as favourable, provided this illness is detected and treated in due time. Most patients diagnosed and treated during the early stages of syphilis have an excellent prognosis and can be cured with appropriate antibiotic therapy.
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The timely visit to the doctor helps avoid organ failure.
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Syphilis affects the brain, nervous system, eyes, heart, and blood vessels without being treated.
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It is possible that the effects of late syphilis cannot be reversed by any means whatsoever.
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Follow-ups involving a series of blood tests will be needed to monitor the recovery process.
How Can I Prevent Syphilis?
Preventive measures can significantly reduce the risk of syphilis.
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Practice Safe Sex: The use of condoms regularly during sex makes you less likely to become infected.
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Regular STI Tests: It is essential to take tests for sexually transmitted diseases regularly, especially those involved in sexual activities.
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Maintain Few Sexual Contacts: Having fewer sexual contacts lowers your chance of infection.
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Avoid Risky Sexual Activities: Risky sexual practices make it more likely that you become a victim.
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Pre-Natal STI Test : Syphilis testing regularly in pregnant women prevents congenital syphilis.
Does Health Insurance Cover Syphilis?
Yes, most health insurance policies in India generally cover the medical expenses associated with syphilis treatment, provided the treatment is medically necessary and falls within the policy's terms and conditions. Coverage may include hospitalisation expenses, diagnostic tests, doctor consultations, prescribed medications, and other treatment-related costs. However, the extent of coverage can vary depending on the insurer and the specific policy.
If syphilis is considered a pre-existing condition at the time of purchasing the policy, a waiting period may apply before related claims become eligible. Coverage for complications arising from untreated syphilis, such as neurosyphilis or cardiovascular syphilis, may also depend on policy terms and the severity of the condition.
How Much Health Insurance Coverage is needed for Syphilis Treatment?
The amount of coverage needed depends on disease severity, treatment type, and location. In most cases, coverage of around ₹5–10 lakh may be suitable. It can help cover diagnostics, medications, consultations, and hospitalisation expenses. Rising medical inflation in India is estimated at 12.9%–14% in 2025–26.
Higher coverage of around ₹15–20 lakh may be worth considering in some cases. This may help if complications require prolonged treatment or hospitalisation. Neurosyphilis and cardiovascular syphilis can increase treatment costs significantly. Comparing health insurance plans can help you find suitable coverage for your healthcare needs.
FAQs
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Q1. What is the first sign of syphilis?
Ans: A painless sore known as a chancre is usually the first sign of syphilis. It develops at the site where the bacteria entered the body and may go unnoticed, especially if it occurs inside the mouth, rectum, or cervix. -
Q2. Explain why syphilis is referred to as ‘the great imitator’?
Ans: Syphilis is referred to as a great imitator due to the various symptoms that it presents, and this means that many other diseases can be mistaken for syphilis. There are various conditions, such as skin rashes and cardiac disease, fever, among others. -
Q3. Can syphilis be cured?
Ans: Yes. Syphilis can usually be cured with appropriate antibiotic treatment, particularly when diagnosed early. However, damage caused by advanced disease may not always be reversible.
