Although scientists are still learning how the disorder works, many think it has to do with changes in a circuit of the brain called the corticostriatal pathway, which regulates habit and repeated action.

尽管科学家们仍在了解这类疾病的运作，但许多人认为它必定与脑中称为“皮质纹状体通路”的回路改变有关，而那是用于规范习惯和重复动作的。