If white lips have been ruled out as a cause of anaemia, you also need to consider the presence of heart disease, such as congenital heart disease and heart failure. Patients with heart disease may suffer from a localised lack of blood supply to the lips due to the heart’s inability to pump blood to meet the body’s needs, thus resulting in a white colour.
In addition, some normal conditions, such as excessive mental stress and cold surroundings, can also cause vasoconstriction, leading to white lips.