It relieves itching, redness, dryness, crusting, scaling, inflammation, and discomfort. The various types of irritation include redness, scaling, crusting, pain, severe itching, and sometimes infection. There may also be ulceration, crusting, abscesses, and sinus tracts. Treatment is stopped when ulceration and crusting appear. The resulting scaling, redness, chapping and crusting make a well-defined ring around the lips. This appears as crusting and ulceration caused by repetitive chewing and sucking of the lips. Although these lesions are small, they are often complicated by bleeding, crusting and ulceration. Lichenification, excoriation and erosion or crusting on the trunk may indicate secondary infection. Chronic cheilitis simplex can progress to crusting and bleeding. The latter is characterized by a dryness, fissuring, edema, and crusting. The papules evolved through phases of vesiculation, pustulation, umbilication, and crusting. Initial signs include thickening, crusting and folding of the skin. Mulch keeps plant roots cool, prevents soil from crusting, minimizes evaporation and reduces weed growth. In this process, patients may experience light bruising and crusting of the skin. In chronic vestibulitis, induration of vestibular skin and crusting is seen.