Syphilis Treatment: Managing Symptoms and Medication Concerns - Urology

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Syphilis Treatment


Hello Doctor: Recently, I developed a rash on my body and after screening, I was confirmed to have syphilis with a titer of 1:64.
I am currently being treated at Kaohsiung Medical University Hospital.
I suspect that I contracted syphilis during a business trip to the United States five months ago, so I informed my doctor about my travel history during my follow-up visit.
I chose to use a single-dose treatment of Azithromycin, taking eight tablets at once, but I experienced diarrhea immediately after taking the medication, although I did not have a fever.
Three days later, the rash did not improve; in fact, it worsened.
After three more days, I returned to the clinic and informed my doctor about my condition.
The doctor recommended switching to doxycycline for a 14-day treatment, taking two capsules daily.
Today is the second day of the treatment, but the rash has increased, and the red areas are slightly swollen.
It seems that the lymph nodes behind my ears are also swollen.
During my first outpatient visit, there was no lymphadenopathy.
Since I returned from the United States, I had surgery, and I recall that the antibiotic I took then seemed to have a similar capsule shell to doxycycline.
I am concerned about the possibility of antibiotic resistance and would like to ask the doctor if this is a normal phenomenon.
Is it common to have a fever when taking medication for this disease, and what should I do next?

Chen, 20~29 year old female. Ask Date: 2018/03/01

Dr. Du Shixi reply Urology


Hello: If you have previously taken doxycycline, it is not an allergy, but the rash may still be due to the effects of syphilis itself.
It is recommended to seek medical attention from an infectious disease specialist at a medical center, as they have access to PENICILLIN injections, which make treatment straightforward.
Wishing you good health.

Reply Date: 2018/03/01

More Info


When it comes to managing syphilis treatment, it is essential to understand the nature of the disease, the medications used, and the potential side effects that may arise during treatment. Syphilis is a sexually transmitted infection caused by the bacterium Treponema pallidum, and its treatment typically involves antibiotics, with penicillin being the most common choice. However, in cases where patients have allergies or other contraindications, alternatives like doxycycline may be prescribed.

In your case, you mentioned experiencing a rash and gastrointestinal symptoms after taking a specific medication for syphilis. It is not uncommon for patients to experience side effects from antibiotics, including diarrhea, which can occur due to the disruption of normal gut flora. The fact that you experienced diarrhea immediately after taking the medication suggests that your body may be reacting to it, which can happen with certain antibiotics.

The increase in the rash and the swelling of lymph nodes, particularly after switching to doxycycline, raises some concerns. While it is possible for the rash to worsen initially as the body responds to treatment, it is also important to consider the possibility of an allergic reaction or a different underlying issue. The fact that you have a history of surgery and were on antibiotics prior to starting doxycycline could complicate your situation. It is crucial to communicate these developments to your healthcare provider, as they can assess whether the symptoms you are experiencing are a normal part of the treatment process or indicative of a more serious reaction.

Regarding your concerns about antibiotic resistance, it is essential to note that resistance typically develops over time with inappropriate use of antibiotics. If you have been prescribed doxycycline for syphilis, it is likely that your healthcare provider has determined it to be an appropriate choice based on your medical history and the specific strain of the infection. However, if you suspect that the treatment is not effective or if you are experiencing worsening symptoms, it is vital to follow up with your doctor promptly.

In terms of fever, it is not a guaranteed symptom of treatment for syphilis. Some patients may experience fever as a reaction to the treatment, particularly if they have a high bacterial load or if they are experiencing a Jarisch-Herxheimer reaction, which can occur after the initiation of antibiotic therapy for syphilis. This reaction is characterized by fever, chills, and exacerbation of symptoms due to the rapid die-off of bacteria. However, not all patients will experience this, and the absence of fever does not necessarily indicate that the treatment is ineffective.

As for your next steps, I recommend the following:
1. Follow Up with Your Doctor: Given the worsening of your rash and the swelling of your lymph nodes, it is crucial to return to your healthcare provider for a thorough evaluation. They may want to perform additional tests or consider alternative treatments if necessary.

2. Monitor Symptoms: Keep a detailed record of your symptoms, including any new developments, the timing of your medication, and any side effects you experience. This information will be valuable for your healthcare provider in determining the best course of action.

3. Stay Hydrated and Rest: Ensure you are drinking plenty of fluids, especially if you are experiencing diarrhea. Rest is also important for your recovery.

4. Avoid Self-Medication: Do not attempt to change your medication regimen without consulting your healthcare provider. They are best equipped to make decisions based on your specific situation.

5. Consider a Specialist: If your symptoms persist or worsen, you may want to seek a referral to a specialist in infectious diseases who can provide more targeted care for your condition.

In summary, while some side effects are common with antibiotic treatment for syphilis, the worsening of your rash and lymph node swelling should be addressed with your healthcare provider. Open communication with your doctor is key to managing your treatment effectively and ensuring the best possible outcome.

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