Jellied desserts are made with a sweetened liquid thickened with gelatin or another thickening agent. Some stabilizers and thickening agents are gelling agents. Bronchiectasis is bronchial dilation with bronchial wall thickening. Thickening or calcification of the coracoacromial ligament can also cause impingement. Blunt trauma causes swelling, thickening, and whitening of the lens fibers. Other effects may include darkening of skin and thickening of skin. Pus is usually present, along with gradual thickening and browning discoloration of the nail plate. Radiographic findings include airway dilation, bronchial wall thickening, and atelectasis. This results in inflammation and thickening of the joint capsule. They are widely used in the food industry, for their gelling, thickening, and stabilizing properties. Hypertrophic cardiomyopathy involves enlargement and "thickening" of the heart muscle. Side effects may include sun sensitivity, skin redness, thickening, or itching. The mechanism of the white appearance is thickening of the keratin layer, called hyperkeratosis. These coatings have been described as shear thickening fluids. Repeated attacks may result in fissures and skin thickening.