Anxieties incidental to normal pigmentations of the oral mucosa.
D001007:Anxiety; D044383:Black People; D005881:Gingiva / Q000033:anatomy & histology*; D006801:Humans; D007721:Knowledge of Results, Psychological; D009061:Mouth Mucosa / Q000033:anatomy & histology; D010858:Pigmentation; D013335:Students, Dental / Q000523:psychology; D044465:White People