Fig. 3From: Cluster headache and kynurenines a and b Significant correlations between the age of healthy controls and plasma levels of Trp, KYNA, 3-HANA and QUINA, as well as the age of CH patients and plasma levels of ictal ANA. Median of data and value of interquartile range were represented in the figures. Trp: tryptophan, KYNA: kynurenic acid, 3-HANA: 3-hydroxyanthranilic acid, QUINA: quinolinic acid, ANA: anthranilic acidBack to article page