PRL and rosacea: In another study, Berksoy Hayta et al. have investigated serum levels of free thyroid hormones, thyroid autoantibodies, prolactin, Dehydroepiandrosterone Sulfate (DHEAS), basal cortisol, C-reactive protein, and erythrocyte sedimentation rates in 72 rosacea patients and 62 controls, and reported no significant association between the groups according to the presence of thyroid disease.