Normally, as we learned in Chapter V, there is an increase in the vaginal secretion during pregnancy; but this fact is rarely noticeable until the latter months. Usually it is pronounced only during the last few weeks. At that time, owing to its antiseptic qualities, this pale white fluid should not be disturbed by the use of douches. In the early months of pregnancy, however, leucorrhea may cause such inconvenience as to demand medical treatment. While itching is the most disagreeable effect of such a vaginal discharge, it should be known that itching is not always due to leucorrhea. Thus it may be caused by a highly concentrated urine, and in that event will be relieved by drinking a larger amount of water; or it may be due to the presence of unusual constituents in the urine. Skin diseases also cause itching; and light haired people, since they have more delicate skins that brunettes, are especially susceptible to these ailments. To such skin affections soap and water may be very irritating; so that when they exist it is often advisable to cleanse the parts with olive oil. In other cases, ointments are required and will be prescribed by the physician. Itching of the skin over the extremities or over the whole body, it is clear, cannot be attributed to leucorrhea, but in these very rare cases the irritation would seem to be caused by some waste product which is being eliminated through the sweat glands. We do not know what the substance is, but, as the symptom appears so seldom, it must be due to an unusual kind of waste product or else to one whose elimination normally occurs through other channels. The affection of the skin thus brought about is really a very mild kind of poisoning, and since the offending substance arises in the body of the patient herself the condition is called an autointoxication. Effective treatment consists in drinking water freely and taking a cathartic, for the one stimulates the kidneys and the other the bowels to assist in getting rid of the cause of the trouble.