Dermatology Questions? Ask an Online Dermatologist.
Hello from JustAnswer.
Is there any associated inflammation or scarring?
Could you attach a picture of the skin that has lost color?
I had asked for some additional information and have not heard back.
The most common cause of loss of skin color is vitiligo, and this is unrelated to masturbation. It is possible that loss of skin color could be due to inflammation of the skin, and inflammation could be related to masturbation, although even this is not very commonly seen with masturbation.
Although the usual approach would be to see your doctor, another option would be to try an over the counter hydrocortisone cream, which can help with inflammation and vitiligo.
If I can provide any additional information, please let me know.