Condition guide

Primary Syphilis

The first stage of syphilis, typically marked by a painless chancre.

Overview

Primary syphilis usually begins with a painless ulcer called a chancre at the site of infection. The lesion may be hidden and can heal without treatment, but the infection may progress if not treated.

Causes and transmission

Caused by Treponema pallidum after sexual exposure.
The chancre contains infectious material and can transmit infection.

How it is assessed

Darkfield or PCR testing may be used for lesion material where available.
Blood tests may become positive after several weeks.

Management considerations

Stage-appropriate antibiotic treatment is used under medical supervision.
Partner evaluation and follow-up testing are important.

Prevention

Avoid contact with ulcers.
Use barrier protection and seek testing after exposure.

Key points

Often starts as a painless sore
May be overlooked or hidden
Requires laboratory confirmation
Early treatment prevents progression

When to seek care

New painless genital sore
Ulcer that heals spontaneously
Possible syphilis exposure

Clear answers

Frequently asked questions

Is Primary Syphilis always sexually transmitted?

Not necessarily. Some conditions in this directory are STIs, while others are genital or reproductive health conditions that may be associated with sexual activity or have other causes. The page explains the distinction.

Can symptoms appear without an infection?

Yes. Skin irritation, anatomical variation, inflammation and non-infectious conditions can cause similar symptoms. Testing and examination are needed before assuming an STI.

When should I seek medical advice?

Seek prompt advice for new sores, discharge, pelvic or testicular pain, painful urination, fever or symptoms that worry you. Early assessment can prevent complications and clarify the cause.

Should my partner be involved?

For many STIs, partner evaluation may be recommended to prevent reinfection and support treatment. The need depends on the condition, timing and results.

Keep learning

Related guides

Syphilis

Syphilis overview covering stages, testing, treatment and prevention.

HIV

Human immunodeficiency virus infection, its testing, prevention and long-term care.

Secondary Syphilis

The second stage of syphilis, often associated with rash and systemic symptoms.

Latent Syphilis

Asymptomatic syphilis detected by blood tests after earlier infection.

Privacy and dignity

A respectful space for sensitive concerns

Sexual health questions can feel personal. The goal of every consultation is to provide clear medical information, explain options and support next steps without judgment, pressure or unnecessary disclosure.

Ask questions at your own pace.
Share only the information needed for safe care.
Request discreet communication where appropriate.
Bring a trusted support person if that helps.