<s>[INST] <<SYS>> This is a medical question of type : frequency <</SYS>> How many people are affected by dystonia 6 ? [/INST] The prevalence of dystonia 6 is unknown. Studies indicate that it likely accounts for between 1 and 3 percent of all cases of dystonia. For reasons that are unclear, the disorder appears to be slightly more prevalent in females than in males. </s>