A day of love with cupid sending all kinds of little messages around the place. Mystery flowers, chocolates, under-wear, and let's not forget those cryptic card messages that leave the cleverest scientists baffled. It's supposed to be a day of fun, flirtation, and romance - but it isn't always.
Most people suffer with a mouth ulcer every now and then.
They're extremely common. This lining is very sensitive and when a break in its surface occurs the nerves that lie in and underneath it are exposed. Anything that touches them such as food, liquid, a tooth-brush, causes pain. Valentine's Day can be a particularly sensitive time. Many of those because it was too painful, but also because they thought you could catch a mouth ulcer from someone who has them - which of course is not true.