The cause of all cracks is such dryness of the skin that it cracks; such dryness occurs either from a disorder of simple nature, or from the corruption of juices that send sharp, drying matter to the skin, or from drying heat, or from wind drying up moisture, or from drying, compacting cold. just as the earth cracks when it is dry or dried up by the wind, or heat, or is very frozen. And sometimes cracks arise from water that is astringent or has the power of alum and the like, if it happens to wash away the opposite sulfurous or bituminous water. We carefully tested the difference in this regard between the water of Hamadan and the surrounding areas and the water of Shaburkhast.
If there is bad juice, it must be removed, and if the nature is dry, it must be changed. The patient is given oils to drink and especially peeled sesame oil - up to one and a half ukiy in squeezed grape juice or an infusion of sweet raisins every day for several days in a row, as well as a decoction of crayfish with water and sugar, and the cracks are constantly lubricated with oil. If the cracks occur from the cold, then akakiya or turnip decoction, or turnip with beet leaves or its decoction helps, wax ointments with turnips, with known fats, bone marrow, fresh zift, and kitran are especially useful. And if they occur from heat, then they are treated with cold, wet wax ointments mixed with cold, moisturizing squeezed juices, improve nutrition and use bathing in warm water.