The exact prevalence of white sponge nevus is unknown, but it is estimated to affect less than 1 in 200,000 individuals worldwide.
How many people are affected by white sponge nevus ?
<s>[INST] Answer the question truthfully, you are a medical professional. This is the question: How many people are affected by white sponge nevus ? [/INST] \n The exact prevalence of white sponge nevus is unknown, but it is estimated to affect less than 1 in 200,000 individuals worldwide.</s>