IMPERIAL HIGHWAY & PIONEER BOULEVARD PROJECT - Week of March 26, 2017. Project Information. Improvements: HOV lane, one mixed-flow lane in each direction, interchange modifications at San Antonio Avenue undercrossing, Imperial Highway undercrossing, Pioneer Boulevard undercrossing and Orr and Day Road. Start Date: 2013.
Infections can cause mouth ulcers. Herpes simplex often causes mouth ulcers in children and some adults. Other less common viral and bacterial infections may cause mouth ulcers, but this is rare. Mouth ulcers can be caused by anaemia and occasionally by other blood disorders, and some skin or gastrointestinal diseases.
Mouth injury: biting or chewing the inside of the mouth causes ulcers as does the excessive use of a toothbrush. They can also be caused by dental treatment, a sports injury or poorly fitting dentures. Bad diet: a diet lacking in certain vitamins, folic acid or iron can trigger the development of mouth ulcers.