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 ulcers often cause pain and discomfort, and may alter the person's choice of food while healing occurs (e.g. avoiding acidic or spicy foods and beverages). They may form individually or multiple ulcers may appear at the same time (a crop of ulcers). Once formed, the ulcer may be maintained by inflammation and/or secondary infection. Rarely, a mouth ulcer that does not heal may be a sign of oral cancer.