Tongue diagnosis: relationship between sublingual tongue morphology in three tongue protrusion angles and menstrual clinical symptoms

While the study showed the relations between tongue SLV features and menstrual clinical symptoms, as well it showed that IP2 was the best overall predictor for the symptomatic indexes used in this study, and using one particular SLV inspection procedure may not be sufficient. The application of a particular inspection method alone may cause under- or over-estimation of SLV abnormalities.