Additionally, the protein expression of GRK6 in insular cortex (IC), basolateral amygdala (BLA), and prefrontal cortex (PFC) regions of PMS and CON rats were detected and no significant difference was observed between them (Figure 1E–G, p > 0.05, n = 8 rats for each group, two‐tailed two‐sample t‐test). Here, GRK6 is linked to premenstrual tension.