Table 1 SCD basic criteria according to SCD-I [13]

(a) self-experienced persistent decline in cognitive capacity compared with a previously normal status unrelated to an acute event.

(b) normal age, gender, and education-adjusted performance on extensive neuropsychological testing according to clinical normative data.

(c) normal global cognition and performance in activities of daily living.

(d) absence of MCI or dementia.

(e) absence of past or present psychiatric or neurologic diseases, medical disorders, substance abuse, or use of medications that might explain the presence of subjective cognitive complaints.