Pearly fossa dotted white changes may be cancerous or caused by inflammation of the throat. 1. Inflammation of the throat: if the throat tissue is stimulated by foreign objects or the local mucous membrane is damaged, it is easy to trigger inflammation, which will lead to white dotted changes on the surface of the throat. At this time, appropriate supplementation of vitamin C or taking capsules or cough syrup can effectively relieve the disease. 2. Cancer: Laryngeal cancer will appear white dotted changes in pear-shaped fossa in the early development process. At this time, it will cause hoarseness and white spots on vocal cords. It is necessary to consult doctor as soon as possible after discovery, so as to make clear diagnosis and carry out corresponding treatment. After the appearance of pearly fossa white dotted change, early examination of pharyngeal endoscopy can be carried out, which can be combined with blood routine, tumor markers and other tests to determine whether there is cancer or not.