White like ulcers inside the throat may be caused by diseases such as mouth ulcers, purulent tonsillitis and herpes pharyngitis. 1. Mouth ulcers: refers to the destruction, defects, and formation of depressions in the mucous membrane of the mouth. The manifestation of round, oval ulcers, can occur in the pharynx. The onset of the disease is affected by a variety of factors, such as local trauma, vitamin or trace element deficiencies and other causes. 2. Purulent tonsillitis: If infected with pathogenic bacteria such as beta-hemolytic streptococcus, it may lead to purulent inflammation of the tonsils, resulting in white pus spots in the throat. 3. Herpetic pharyngitis: mainly caused by enterovirus infection, may appear sudden fever, sore throat and other uncomfortable symptoms, there may be scattered herpes in the pharynx, which will become small ulcers after breaking. If there are white like ulcers inside the throat, you should go to the hospital in time to avoid delay.