the Effects of Laderma on HPV and Skin Conditions - Urology

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Questions about Lede Mei?


Hello, I would like to ask a few questions.
Previously, I had some growths on my penis and foreskin, and after visiting a major hospital, the doctor diagnosed them as pearly penile papules and another condition called Fordyce spots.
The doctor assured me that these are not sexually transmitted infections, so I didn't need to worry.
At that time, I wanted to have tests done for confirmation, but the doctor said it was 100% unnecessary.
Trusting the doctor's expertise and noticing that the growths did not increase in size or number, I did not pursue further testing.
Recently, I developed flat warts on my hand, which I found out are also a type of HPV but caused by a different strain.
The dermatologist prescribed Aldara (imiquimod) for me to apply, and it has been effective; the flat warts started to become red, swollen, itchy, and then scabbed over and fell off.
I later discovered that I also had a few spots on my face that I hadn't noticed before.
I did not apply Aldara to my face, yet those spots also scabbed and fell off.

So, I would like to ask the doctor:
1.
Does the immune response from Aldara work on all HPV viruses in the body, or is it only effective in the area where it is applied? Since my facial spots also resolved without treatment, does this imply a systemic effect?
2.
Following up on question 1, if it does have a systemic effect, could it potentially help with any undetected genital warts on the penis, causing them to also scab and fall off? Or is the immune response from this treatment only effective against flat warts and not other types like genital warts?
3.
Does this mean that I now have antibodies against flat warts that could help combat future infections? Also, does getting the HPV vaccine for males effectively prevent genital warts or HPV infections?
Thank you, doctor, and Happy New Year!

Xiao Xiao, 20~29 year old female. Ask Date: 2019/02/06

Dr. Du Shixi reply Urology


Hello: Regarding the issue you mentioned in point 1.2, there is limited clinical experience.
Please consult a dermatologist.
As for vaccines, there are only a few types that effectively prevent HPV, but there are hundreds of HPV types.
Therefore, comprehensive prevention may still require further efforts and is currently out-of-pocket.
Wishing you good health.

Reply Date: 2019/02/06

More Info


Laderma, known generically as Imiquimod, is an immune response modifier that is often used in the treatment of various skin conditions, including those caused by the human papillomavirus (HPV), such as flat warts and genital warts (condylomata acuminata). Understanding how Laderma works and its effects on HPV can help clarify its role in treating skin conditions.

1. Mechanism of Action: Laderma works by stimulating the immune system to produce interferon and other cytokines, which help the body fight off viral infections. When applied topically, it primarily acts at the site of application. This means that its effects are localized to the area where it is applied. Therefore, if you apply Laderma to a flat wart on your hand, it will primarily target that wart and not necessarily affect HPV present in other areas of your body, such as the genital region.
2. Effect on Different HPV Types: HPV is a diverse group of viruses with many different strains. The immune response triggered by Laderma is specific to the type of HPV that is present in the treated area. For instance, if you have flat warts caused by a specific strain of HPV, Laderma can help clear those warts. However, if you have genital warts caused by a different strain, the treatment may not be effective unless it is applied directly to those warts. Therefore, if you have not treated genital warts with Laderma, it is unlikely that the treatment for flat warts would have any effect on them.

3. Antibody Development: When your body successfully fights off an HPV infection, it may develop antibodies against that specific strain. This means that if you were to encounter the same strain again, your immune system might be able to respond more effectively. However, this does not mean that you will be immune to all strains of HPV. Each strain can elicit a different immune response, and having antibodies against one strain does not guarantee protection against another.

4. HPV Vaccination: Vaccination against HPV is an effective way to prevent infections from certain high-risk strains of the virus that can lead to cancers, as well as low-risk strains that cause genital warts. The HPV vaccine is recommended for both males and females and can significantly reduce the risk of developing HPV-related conditions, including genital warts. It is important to note that the vaccine is most effective when administered before the onset of sexual activity, but it can still provide benefits to those who are already sexually active.

5. Side Effects and Considerations: While Laderma is generally well-tolerated, it can cause local side effects such as redness, irritation, and swelling at the application site. These reactions are usually mild and resolve after discontinuation of the treatment. It is essential to follow your healthcare provider's instructions regarding the application and duration of treatment to minimize side effects and maximize effectiveness.

In conclusion, Laderma is a valuable treatment for certain HPV-related skin conditions, but its effects are localized to the area of application. It does not provide systemic immunity against all HPV strains, and vaccination remains a crucial preventive measure. If you have concerns about HPV or its treatment, it is advisable to consult with a healthcare professional who can provide personalized guidance based on your medical history and current condition.

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