Syphilis
Syphilis is a complex bacterial infection usually spread by sexual contact that progresses through distinct clinical stages. If left untreated, it can cause severe long-term damage to the heart, brain, and other organs.
Overview
Syphilis is a complex bacterial infection usually spread by sexual contact that progresses through distinct clinical stages. If left untreated, it can cause severe long-term damage to the heart, brain, and other organs.
Symptoms
Click any symptom to analyzeNo symptoms mapped yet.
Causes
- •Treponema pallidum bacteria
- •unprotected sexual contact
- •direct contact with a syphilis sore (chancre)
- •mother-to-fetal transmission during pregnancy
Risk factors
- •unprotected sexual intercourse
- •having multiple sexual partners
- •men who have sex with men (MSM)
- •having a history of other STIs like HIV
How it progresses
3 stages- Stage 1 — EarlyMild or intermittent symptoms; easily mistaken for something minor.Often missed
- Stage 2 — ProgressiveSymptoms become more frequent or severe.
- Stage 3 — EstablishedDaily life affected; medical care strongly recommended.
How it's diagnosed
- •blood tests (TPPA or RPR)
- •fluid testing from a sore
- •lumbar puncture (if neurosyphilis is suspected)
Treatment options
General educational information only — no dosage advice. Always follow guidance from a qualified clinician.
- •intramuscular penicillin injections
- •alternative antibiotics for those with allergies
- •partner notification and treatment
- •regular monitoring by a healthcare provider
- •notify all recent sexual partners
- •abstain from sexual activity until treatment is finished
- •follow-up blood tests as scheduled
- •consistent use of barrier protection in the future
Complications
- •Long-term damage if untreated
- •Reduced quality of life
- •Worsening symptoms over time
- •Recurrence of syphilis
Prevention
- •Maintain a healthy lifestyle
- •See a clinician for routine check-ups
When to seek help
- •Symptoms persist beyond a few days
- •Symptoms interfere with daily activities
- •New or worsening symptoms appear
- •Concerning changes related to syphilis
- severe, persistent headache
- sudden vision changes or loss
- stiff neck and confusion
- difficulty coordinating muscle movements
- chest pain or shortness of breath
In any emergency, call your local emergency number or go to the nearest emergency department.
Real-world questions
- ›Can Syphilis cause headaches?
- ›Is Syphilis reversible?
- ›How quickly does Syphilis progress?
- ›Is Syphilis hereditary?
- ›Can Syphilis be prevented?
Compare conditions
Explore related symptoms
Frequently asked questions
Possible causes of Syphilis include Treponema pallidum bacteria, unprotected sexual contact, direct contact with a syphilis sore (chancre), mother-to-fetal transmission during pregnancy.
Syphilis can be serious and may require prompt medical attention, especially if symptoms are severe or worsening.
Duration varies between individuals. Many cases improve with appropriate care, while others may persist longer and require ongoing management.
Syphilis typically benefits from medical evaluation and should not be ignored.
Consider seeing a clinician if symptoms are severe, persistent, worsening, or if you have any concerns related to general.
Sources
Information based on general medical references such as:
Last reviewed: May 2026