Syphilis
At a Glance
Syphilis is a sexually transmitted bacterial infection that progresses through distinct stages and can cause widespread damage to the skin, heart, brain, and other organs if not treated with antibiotics.
It is a relatively common infection that most frequently affects sexually active adults, particularly those between the ages of 20 and 35.
Syphilis is a treatable condition that begins as an acute infection but can become a chronic, life-long disease with serious complications if it remains undiagnosed and untreated.
The outlook is excellent with early treatment, which cures the infection and restores normal life expectancy, although physical damage caused by late-stage disease is generally permanent.
How It Affects You
Syphilis is a systemic bacterial infection that can affect nearly every part of the body if the bacteria are allowed to spread through the bloodstream. While it typically begins with a sore at the infection site, it can progress to cause widespread skin rashes and eventually damage internal organs, including the brain, nerves, eyes, and heart. Without treatment, the long-term effects can be severe and affect multiple systems simultaneously.
- It often starts with a local sore on the genitals, mouth, or rectum.
- Secondary stages frequently involve a non-itchy rash on the palms of the hands and soles of the feet.
- Advanced stages can result in serious damage to the cardiovascular and nervous systems.
Causes and Risk Factors
Underlying Causes and Transmission
Syphilis is caused by a bacterium called Treponema pallidum. The infection is primarily transmitted through direct contact with a syphilis sore, known as a chancre, during vaginal, anal, or oral sex. These sores can occur on or around the external genitals, in the vagina, around the anus, or in the rectum, as well as in or around the mouth. It is also possible for the infection to spread from a pregnant person to their unborn baby, a condition known as congenital syphilis.
Risk Factors
Anyone who is sexually active can contract syphilis, but certain factors increase the likelihood of infection. Engaging in unprotected sex is a primary risk factor. Having multiple sexual partners or anonymous partners also increases exposure risk. There is a strong link between syphilis and HIV; behaviors that lead to one infection often increase the risk of the other, and having a syphilis sore can make it easier to transmit or contract HIV.
Prevention Strategies
The only way to completely avoid syphilis is to abstain from sexual contact or to be in a long-term mutually monogamous relationship with a partner who has been tested and is known to be uninfected. Using latex condoms correctly every time you have sex can reduce the risk of infection. However, condoms only protect the area they cover, so transmission is still possible if a sore is present on an uncovered part of the body. Regular screening is a crucial preventive step for sexually active individuals, as it allows for early detection and treatment, preventing transmission to others.
Diagnosis, Signs, and Symptoms
Primary Stage Symptoms
The first sign of syphilis is usually a small sore, called a chancre. The sore appears at the spot where the bacteria entered the body. Most people have only one sore, but some may develop several. The chancre is typically firm, round, and painless. Because it is painless and may be hidden inside the vagina or rectum, it can easily go unnoticed. The sore typically lasts for three to six weeks and heals on its own regardless of whether treatment is received, but the infection remains in the body.
Secondary Stage Symptoms
If not treated, the infection progresses to the secondary stage. This is often characterized by a skin rash and mucous membrane lesions. The rash typically does not itch and may appear as rough, red, or reddish-brown spots on the palms of the hands and the bottoms of the feet. Other symptoms during this stage can include fever, swollen lymph nodes, sore throat, patchy hair loss, headaches, weight loss, muscle aches, and fatigue. These symptoms will also resolve without treatment, but the infection will move to the latent stage.
The latent stage is a period where there are no visible signs or symptoms. This stage can last for years. Without treatment, syphilis can eventually progress to the late or tertiary stage, which can occur 10 to 30 years after the initial infection. Late syphilis can damage the internal organs, including the brain, nerves, eyes, heart, blood vessels, liver, bones, and joints. Symptoms vary depending on the organ system affected and can include difficulty coordinating muscle movements, paralysis, numbness, gradual blindness, and dementia.
Diagnostic Tests
Clinicians diagnose syphilis using blood tests that look for antibodies to the bacteria. These tests are simple and widely available. There are two types usually performed: a nontreponemal test (used for screening) and a treponemal test (used to confirm the diagnosis). In some cases, a clinician may take a sample of fluid from a sore to look for the bacteria under a special microscope. Because the symptoms can look like many other diseases, syphilis has been called the "great imitator," making blood testing essential for an accurate diagnosis.
Treatment and Management
Medications and Medical Interventions
Syphilis is treated with antibiotics. The preferred treatment for all stages is penicillin, an antibiotic medication that can kill the organism that causes the infection. For early stages, a single injection of long-acting Benzathine penicillin G can cure the disease. Late-stage syphilis or neurosyphilis may require multiple doses or daily intravenous treatment. Individuals who are allergic to penicillin may be treated with other antibiotics, such as doxycycline or tetracycline, although penicillin is the only recommended treatment for pregnant women. Desensitization to penicillin may be necessary for those with allergies who cannot take alternatives.
Managing Treatment Side Effects
Some people experience a reaction known as the Jarisch-Herxheimer reaction within 24 hours of starting treatment. Symptoms may include fever, chills, nausea, achy pain, and headache. This reaction is not an allergic reaction to the antibiotic but rather a response to the bacteria dying. It typically resolves within a day and can be managed with rest and fluids.
Lifestyle and Follow-Up
It is critical to abstain from sexual contact until the treatment is completed and any sores have completely healed. Sexual partners from the recent past should be notified so they can be tested and treated. Follow-up blood tests are usually required at specific intervals (often 6 and 12 months after treatment) to ensure the medication has worked and the infection is cleared. Treatment kills the bacteria and prevents future damage, but it cannot repair organ damage that has already occurred.
When to Seek Medical Care
You should see a doctor if you notice any unexplained sores, rashes, or lumps in the genital area or mouth. Urgent care is recommended if you have had sexual contact with someone who has been diagnosed with syphilis. Routine screening is advised for pregnant women and individuals at higher risk. If you are being treated and symptoms do not improve or if new symptoms develop, contact your healthcare provider immediately.
Severity and Prognosis
Severity and Disease Course
The severity of syphilis depends largely on how early it is detected and treated. In the primary and secondary stages, the condition is mild in terms of permanent bodily harm and is completely curable. Without treatment, the disease progresses to the latent stage and potentially the tertiary stage. Tertiary syphilis is severe and can be disabling or life-threatening. It involves destructive inflammation that can lead to aneurysms, heart valve disease, stroke, meningitis, and significant neurological deficits.
Prognosis and Long-Term Effects
For those treated in the early stages, the prognosis is excellent, and life expectancy is typically unaffected. The infection is cleared, and no long-term health issues usually remain. However, if treatment is delayed until the late stage, the prognosis is more guarded. While the infection can still be cured to prevent further progression, damage to the heart, brain, or nerves that has already occurred is permanent. This existing damage can affect quality of life and long-term health. Ocular syphilis can cause permanent vision loss, and neurosyphilis can result in lasting cognitive impairment.
Complications in Pregnancy
Congenital syphilis is a particularly severe form of the condition. If a pregnant person has untreated syphilis, the infection can be passed to the fetus with devastating consequences. This can result in miscarriage, stillbirth, or the death of the infant shortly after birth. Babies born with syphilis may have bone deformities, severe anemia, enlarged liver and spleen, jaundice, blindness, or deafness. Prenatal screening and treatment effectively prevent these outcomes.
Impact on Daily Life
Navigating Daily Life and Relationships
Living with a diagnosis of syphilis can bring up feelings of shame, anxiety, or embarrassment due to social stigma associated with sexually transmitted infections. It is important to remember that syphilis is a common medical infection that is easily treated. During treatment, daily activities typically continue as normal, though sexual intimacy must be paused. Open communication with sexual partners is necessary to stop the cycle of reinfection. Coping involves following the treatment plan strictly and engaging in honest conversations with healthcare providers and partners.
Questions to Ask Your Healthcare Provider
Bringing a list of questions to your appointment can help you feel more in control of your health. Consider asking the following:
- What specific tests confirm this diagnosis, and when will I get the results?
- What is the exact treatment plan, and how many doses do I need?
- How long must I wait before it is safe to have sex again?
- Do my previous sexual partners need to be tested and treated?
- How will we know if the treatment has been effective?
- Are there any long-term health effects I should watch out for based on my stage of infection?
- When should I schedule my follow-up testing?
Common Questions and Answers
Q: Can syphilis be cured completely?
A: Yes, syphilis can be cured with the right antibiotics. However, treatment cures the infection and prevents future damage but does not repair damage that has already occurred in the body.
Q: Can I get syphilis again after being treated?
A: Yes, having syphilis once does not protect you from getting it again. You can be reinfected if you have sexual contact with someone who has the infection.
Q: Is syphilis spread through casual contact like toilet seats or doorknobs?
A: No, syphilis is not spread through contact with toilet seats, doorknobs, swimming pools, hot tubs, bathtubs, shared clothing, or eating utensils. It requires direct contact with a sore.
Q: What happens if I forget to take my medication or miss a dose?
A: Treatment for syphilis often involves a single injection or a series of injections administered by a healthcare professional, so missed doses are less common than with daily pills. If you are on a multi-dose regimen and miss an appointment, contact your doctor immediately, as you may need to restart the treatment course.
Q: Can I have syphilis and not know it?
A: Yes, many people with syphilis do not have symptoms or have very mild symptoms that go unnoticed. The sores can be painless and hidden. This is why regular testing is important for those at risk.