Effect of transcutaneous electrical acupoint stimulation at Baihui (GV20) for patients with subjective cognitive decline: a clinical trial

INTERVENTION: Waiting list group:waiting list;transcutaneous electrical acupoint stimulation group:Smartphone‐based transcutaneous electrical acupoint; CONDITION: Subjective Cognitive Decline PRIMARY OUTCOME: mini‐mental state examination, MMSE;shape trailing test A‐B, STT A‐B;subjective cognitive decline questionnaire, SCD‐Q;auditory verbal learning test‐Huashan version, AVLT‐H;animal fluency test, AFT;Boston naming test, BNT; SECONDARY OUTCOME: Hamilton anxiety scale, HAMA;functional activities questionnaire, FAQ);Hamilton depression scale, HAMD; INCLUSION CRITERIA: 1. Meeting the diagnostic criteria for SCD 2. Aged between 55 and 75 years 3. Chinese is the mother tongue, education level is more than 6 years, amd Mini‐mental State Examination (MMSE) score >24 4. Can answer and complete the questionnaire smoothly