Before revision: Chadwick sign is a medical clinical sign characterized by the bluish discoloration of the mucous membranes of the vulva, vagina , and predominantly the cervix, resulting from venous congestion due to increased blood flow as part of the maternal physiological changes in pregnancy.
After revision: Chadwick sign is a medical clinical sign characterised by the bluish-violet discolouration of the mucous membranes of the vulva, vagina (particularly on the anterior vaginal wall), and the cervix, resulting from venous congestion due to increased blood flow as part of the maternal physiological changes in pregnancy.