Canker sore. In some cases, the exact cause of a canker sore is unknown, but trauma or injury to the mouth or oral soft tissues may be the culprit. Other possible causes are food sensitivities, spicy, salty or acidic foods, vitamin B deficiency, hormonal shifts and stress. Cold sore.
What does xoxo mean? Hugs and kisses or xoxo is a term used for expressing affection or good friendship at the end of a written letter, email or SMS text message.
For other uses, see Oxo (disambiguation). Oxo is a brand of food products, including stock cubes, herbs and spices, dried gravy, and yeast extract. The original product was the beef stock cube, but Oxo now also markets chicken and other flavour cubes, e.g. Chinese Recipe and Indian Recipe.