Persistent Growths Between Fingers: Causes and Treatments - Dermatology

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Understanding persistent growths between fingers can be quite perplexing, especially when multiple medical opinions have not provided a clear diagnosis or treatment plan. Based on your description, it seems that you are experiencing recurrent growths in the webbing of your fingers, which have been initially suspected to be viral warts but later dismissed by various doctors. This situation raises several possibilities regarding the underlying causes and potential treatment options.


Possible Causes
1. Viral Warts (Human Papillomavirus - HPV): Although your doctors have ruled out viral warts, it is important to note that HPV can cause warts that may recur after treatment. These warts can be stubborn and may require multiple treatments to fully resolve.

2. Keratosis: The growths you are experiencing could be a form of keratosis, which is a thickening of the outer layer of skin (epidermis). This condition can occur due to friction, irritation, or other factors affecting the skin.

3. Molluscum Contagiosum: This is a viral infection that leads to small, painless bumps on the skin. It is caused by a poxvirus and can be mistaken for warts. The lesions can resolve on their own but may take time.

4. Seborrheic Keratosis: These are non-cancerous skin growths that can appear anywhere on the body, including between the fingers. They are usually brown or black and can vary in size.

5. Chronic Irritation or Friction: If you frequently use your hands for activities that cause friction (like sports or manual labor), this could lead to the formation of calluses or other growths in response to irritation.

6. Genetic Factors: Some individuals may have a genetic predisposition to develop certain skin conditions, including growths or lesions.


Treatment Options
1. Cryotherapy: As you mentioned, freezing the growths has been effective in removing them temporarily. This method can be repeated as needed, but it may not prevent recurrence.

2. Topical Treatments: Depending on the diagnosis, topical treatments such as salicylic acid or other keratolytic agents may help in reducing the thickness of the skin and preventing the growths from returning.

3. Laser Therapy: For persistent or bothersome growths, laser therapy may be an option. This can effectively target and remove unwanted skin lesions.

4. Surgical Excision: If the growths are particularly bothersome or if there is uncertainty about the diagnosis, surgical removal may be considered. This would provide a definitive solution but should be discussed thoroughly with a dermatologist.

5. Avoiding Irritation: If friction or irritation is a contributing factor, consider protective measures such as gloves during activities that may cause trauma to the skin.

6. Regular Monitoring: Since you have seen multiple doctors, it may be beneficial to establish a relationship with a dermatologist who can monitor the growths over time and adjust treatment as necessary.


Conclusion
Persistent growths between the fingers can be frustrating, especially when the cause remains elusive. It is essential to continue seeking medical advice, preferably from a dermatologist who specializes in skin conditions. They may conduct a biopsy or other diagnostic tests to determine the exact nature of the growths. In the meantime, managing irritation and considering the treatment options mentioned can help alleviate your concerns. Remember, maintaining open communication with your healthcare provider about your symptoms and treatment preferences is crucial in finding a satisfactory resolution.