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Syphilis Symptoms, Causes, and Treatment Information

Learn about syphilis symptoms, causes, stages, and treatment options. Understand how this sexually transmitted infection spreads, its health risks if left untreated, and the importance of early diagnosis and proper care.

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Written by Dr. Shaik Abdul Kalam

Reviewed by Dr. M L Ezhilarasan MBBS

Last updated on 13th Jan, 2026

Syphilis Symptoms, Causes, and Treatment Information

Introduction

Syphilis is a sexually transmitted infection (STI) caused by bacteria. While it can be serious if left untreated, the good news is that it is curable with the right medical care. Understanding the symptoms, causes, and treatment options can help you take the necessary steps to protect your health.

What Is Syphilis?

Syphilis is caused by the bacterium Treponema pallidum. It spreads primarily through sexual contact (vaginal, anal, or oral sex) but can also be passed from mother to baby during pregnancy, leading to congenital syphilis. The infection progresses in stages, and symptoms vary depending on how long a person has been infected.

Consult a Sexologist for Personalised Advice

Dr. Johnson. S, General Practitioner

Dr. Johnson. S

General Practitioner

7 Years • MBBS MD(Preventive and social Medicine)

Pune

Apollo Clinic, Nigdi, Pune

800

800

Dr. Sreeparna Roy, Obstetrician and Gynaecologist

Dr. Sreeparna Roy

Obstetrician and Gynaecologist

8 Years • MBBS , MS (OBSTETRICS & GYNAECOLOGY), Fellowship in Infertility, Endoscopy & Ultrasonography), Fellowship in Laparoscopy & Hysteroscopy,DRM

Kolkata

Dr Utsa Basu Clinic, Kolkata

500

Dr Madhu R, Dermatologist

Dr Madhu R

Dermatologist

5 Years • MBBS, MD, DNB (Dermatology), STD specialist, Cosmetologist, Dermatosurgeon

Bengaluru

Apollo Medical Center, Marathahalli, Bengaluru

recommendation

81%

(25+ Patients)

550

850

Mr. Kiran S Sawekar, Clinical Psychologist

Mr. Kiran S Sawekar

Clinical Psychologist

10 Years • Master of Science (M.Sc.) in Psychology (Clinical), Master of Philosophy (M.Phil) in Psychology

Bengaluru

Apollo Medical Center, Marathahalli, Bengaluru

1800

1800

Symptoms of Syphilis

Syphilis develops in stages, and symptoms may not always be noticeable. Here’s what to look for at each stage:

1. Primary Syphilis

•    A small, painless sore (called a chancre) appears at the site of infection (genitals, rectum, or mouth).
•    The sore heals on its own in 3–6 weeks, but the infection remains.

2. Secondary Syphilis

•    A rash (often on palms and soles) that doesn’t itch.
•    Fever, swollen lymph nodes, sore throat, and fatigue.
•    Patchy hair loss and muscle aches.

3. Latent Syphilis

•    No visible symptoms, but the infection is still present in the body.
•    Can last for years if untreated.

4. Tertiary (Late) Syphilis

•    Occurs years after infection if untreated.
•    Can damage the heart, brain, nerves, eyes, and other organs.
•    May lead to severe complications like paralysis, blindness, or dementia.

Congenital Syphilis (Passed from Mother to Baby)
•    Can cause miscarriage, stillbirth, or severe birth defects.
•    Newborns may have rashes, fever, bone deformities, or developmental delays.

What Causes Syphilis?

Syphilis spreads through:
•    Direct contact with a syphilis sore during vaginal, anal, or oral sex.
•    Mother-to-child transmission during pregnancy or childbirth.
•    Blood transfusions (rare, as blood is screened for infections).

It does not spread through casual contact like sharing utensils, hugging, or toilet seats.

How Is Syphilis Diagnosed?

Doctors diagnose syphilis through:
•    Blood tests – Detects antibodies produced in response to the infection.
•    Fluid tests – Fluid from a sore is examined under a microscope.
•    Spinal tap (lumbar puncture) – If nervous system involvement is suspected.

If you suspect exposure, get tested—even if you don’t have symptoms. Early detection prevents complications.

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Treatment for Syphilis

The good news? Syphilis is curable with antibiotics:
•    Early-stage syphilis – A single penicillin injection is usually enough.
•    Late-stage syphilis – May require multiple doses.
•    Allergic to penicillin? – Alternative antibiotics are available.

Important:
•    Avoid sexual contact until treatment is complete and sores heal.
•    Inform recent partners so they can get tested and treated.
•    Follow up with blood tests to ensure the infection is gone.

Preventing Syphilis

You can reduce your risk by:
•    Using condoms correctly during sex.
•    Getting regular STI screenings, especially if sexually active with multiple partners.
•    Avoiding sharing needles or other drug equipment.
•    Pregnant women should get tested to prevent congenital syphilis.

When to See a Doctor?

Consult a healthcare provider if you:
•    Notice unusual sores, rashes, or symptoms.
•    Have had unprotected sex with someone who has syphilis.
•    Are pregnant and concerned about STIs.

Early treatment prevents serious health problems.

Final Thoughts

Syphilis is a treatable infection, but ignoring it can lead to severe health issues. Knowing the symptoms, getting tested, and seeking timely treatment are key to staying healthy. If you have any concerns, don’t hesitate to reach out to a healthcare professional.

Consult a Sexologist for Personalised Advice

Dr. Johnson. S, General Practitioner

Dr. Johnson. S

General Practitioner

7 Years • MBBS MD(Preventive and social Medicine)

Pune

Apollo Clinic, Nigdi, Pune

800

800

Dr. Sreeparna Roy, Obstetrician and Gynaecologist

Dr. Sreeparna Roy

Obstetrician and Gynaecologist

8 Years • MBBS , MS (OBSTETRICS & GYNAECOLOGY), Fellowship in Infertility, Endoscopy & Ultrasonography), Fellowship in Laparoscopy & Hysteroscopy,DRM

Kolkata

Dr Utsa Basu Clinic, Kolkata

500

Dr Madhu R, Dermatologist

Dr Madhu R

Dermatologist

5 Years • MBBS, MD, DNB (Dermatology), STD specialist, Cosmetologist, Dermatosurgeon

Bengaluru

Apollo Medical Center, Marathahalli, Bengaluru

recommendation

81%

(25+ Patients)

550

850

Mr. Kiran S Sawekar, Clinical Psychologist

Mr. Kiran S Sawekar

Clinical Psychologist

10 Years • Master of Science (M.Sc.) in Psychology (Clinical), Master of Philosophy (M.Phil) in Psychology

Bengaluru

Apollo Medical Center, Marathahalli, Bengaluru

1800

1800

 

Consult a Sexologist for Personalised Advice

Dr. Johnson. S, General Practitioner

Dr. Johnson. S

General Practitioner

7 Years • MBBS MD(Preventive and social Medicine)

Pune

Apollo Clinic, Nigdi, Pune

800

800

Dr. Sreeparna Roy, Obstetrician and Gynaecologist

Dr. Sreeparna Roy

Obstetrician and Gynaecologist

8 Years • MBBS , MS (OBSTETRICS & GYNAECOLOGY), Fellowship in Infertility, Endoscopy & Ultrasonography), Fellowship in Laparoscopy & Hysteroscopy,DRM

Kolkata

Dr Utsa Basu Clinic, Kolkata

500

Dr. Gaurab Dasgupta, Urologist

Dr. Gaurab Dasgupta

Urologist

14 Years • MBBS, MS General Surgery, MCH Urology, FMAS

Kolkata

MCR SUPER SPECIALITY POLY CLINIC & PATHOLOGY, Kolkata

1000

Dr Madhu R, Dermatologist

Dr Madhu R

Dermatologist

5 Years • MBBS, MD, DNB (Dermatology), STD specialist, Cosmetologist, Dermatosurgeon

Bengaluru

Apollo Medical Center, Marathahalli, Bengaluru

recommendation

81%

(25+ Patients)

550

850

Mr. Kiran S Sawekar, Clinical Psychologist

Mr. Kiran S Sawekar

Clinical Psychologist

10 Years • Master of Science (M.Sc.) in Psychology (Clinical), Master of Philosophy (M.Phil) in Psychology

Bengaluru

Apollo Medical Center, Marathahalli, Bengaluru

1800

1800

Consult a Sexologist for Personalised Advice

Dr. Johnson. S, General Practitioner

Dr. Johnson. S

General Practitioner

7 Years • MBBS MD(Preventive and social Medicine)

Pune

Apollo Clinic, Nigdi, Pune

800

800

Dr. Sreeparna Roy, Obstetrician and Gynaecologist

Dr. Sreeparna Roy

Obstetrician and Gynaecologist

8 Years • MBBS , MS (OBSTETRICS & GYNAECOLOGY), Fellowship in Infertility, Endoscopy & Ultrasonography), Fellowship in Laparoscopy & Hysteroscopy,DRM

Kolkata

Dr Utsa Basu Clinic, Kolkata

500

Dr. Gaurab Dasgupta, Urologist

Dr. Gaurab Dasgupta

Urologist

14 Years • MBBS, MS General Surgery, MCH Urology, FMAS

Kolkata

MCR SUPER SPECIALITY POLY CLINIC & PATHOLOGY, Kolkata

1000

Dr Madhu R, Dermatologist

Dr Madhu R

Dermatologist

5 Years • MBBS, MD, DNB (Dermatology), STD specialist, Cosmetologist, Dermatosurgeon

Bengaluru

Apollo Medical Center, Marathahalli, Bengaluru

recommendation

81%

(25+ Patients)

550

850

Mr. Kiran S Sawekar, Clinical Psychologist

Mr. Kiran S Sawekar

Clinical Psychologist

10 Years • Master of Science (M.Sc.) in Psychology (Clinical), Master of Philosophy (M.Phil) in Psychology

Bengaluru

Apollo Medical Center, Marathahalli, Bengaluru

1800

1800

Get Your Health Assessed

1209(₹3022)60% off