2.4. Clinical efficacy evaluation
Clinical efficacy was assessed using the nimodipine method as a percentage reduction in CSS score: [(pretreatment score − posttreatment score)/pretreatment score] × 100%. Basic healing: reduction rate ≥ 90%; significant improvement: 46%≤ minus rate < 90%; progress: 18% ≤ minus rate < 46%; The ratio of the sum of basic healing, obvious progress, and progress to the sample size of a single group is the total effective rate of the group.