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.
What is XOXO? XOXO is a symbol or a series of letter which means âhug and kissesâ. In some cases, X is representative of kiss and O is representative of hugs, while in some the reverse is true. In modern letter writing such as in mail and emails (or even chat), XOXO is a sign used to convey affection or used as a sign to sign off.