The presence of small white dots on the tip of the tongue, very painful, is generally considered mostly tongue ulcers, which belong to the mouth ulcers. There are many reasons for tongue ulcers, such as trauma, infection, endocrine abnormalities, or dietary factors, nutritional deficiencies and the possibility of the presence of some diseases: 1. Trauma: the tip of the tongue can be first considered in the consumption of too hot food first contact, resulting in the tip of the tongue at the tissue is burned and thus ulcers. It may also be caused by brushing teeth due to hard bristles or accidental bite when eating, and damage at the tip of the tongue may cause tongue ulcers; 2, infection: infection by bacteria or fungi at the tip of the tongue leads to pathological changes in the tongue tissue, resulting in ulcers; 3, endocrine abnormalities: mostly seen in women, such as menstruation, pregnancy, when the female body estrogen secretion level changes, will affect the oral The change of the mucous membrane inside the mouth, which leads to the appearance of tongue ulcers; 4, dietary factors: the consumption of spicy and irritating food will stimulate the mucous membrane of the tongue tissue, or too much spicy food consumption leads to fire, which can easily trigger tongue ulcers; 5, nutritional deficiencies: when the body intake of vitamin B, zinc, iron, selenium elements are insufficient, it is easy to ulcers in the mouth or the tip of the tongue; 6, psychological stress: if the study work Life pressure increases, mental tension, excessive fatigue, poor sleep quality is also prone to ulcers at the tip of the tongue. Usually transient mouth ulcers do not have to worry too much, generally can be self-healing. And often recurrent mouth ulcers are recommended to go to the hospital in time to clarify the specific causes, to facilitate the treatment of the original cause, usually ulcers will also be improved.