The tongue can be one of the most annoying places to develop a sore; you need your tongue to eat, drink and speak, all of which become difficult and frustrating when a painful sore shows up.

Cold sores -- those painful, fluid-filled, blister-like lesions that appear on or surrounding the lips -- are caused by the contagious herpes simplex virus, or HSV. Two types of this virus, type 1 and type 2, can both cause cold sore-like lesions, but most cold sores are associated with type 1 infections.

Fever blisters are small, fluid-filled bumps that appear around a person's mouth. They can affect anyone, from adults to infants. Also called cold sores, they are caused by a common virus called Herpes simplex, according to the American Academy of Dermatology.

Cold sores are blister-like lesions caused by the herpes simplex virus type 1, often manifesting around the lips, nose and chin. The virus associated with this condition is highly contagious, being passed from one person to the next by an active lesion.

Cold sores go by many names, including fever blisters and herpes. They are caused by type 1 or type 2 herpes simplex virus, and approximately 40 to 85 percent of Americans have suffered a cold sore at some point, according to the National Institute of Dental and Craniofacial Research.

Dealing with a cold can be frustrating, especially when you’re battling a whole myriad of symptoms. A congested throat makes it hard to breathe, talk and eat, and may wake you up during the night.

Theraflu, manufactured by Novartis pharmaceutical company, is an over-the-counter medicine used to alleviate symptoms of the common cold and flu. It comes in hot liquid, warming syrup or caplet form. Several formulas are available to treat different symptoms, such as coughing, chest congestion or a sore throat.

Cold sores are sores caused by the herpes simplex one and the herpes simplex two viruses. These sores are commonly found on the lips, nostrils, mouth and external genitalia. However, the herpes simplex viruses may also cause lesions anywhere on an individual's skin, including on the back of the neck.

Fever blisters, or herpes labialis, are caused by the herpes simplex 1 virus, according to Medline Plus. Swollen, reddened lesions on the lips or skin surrounding the mouth characterize the condition.

Cold sores are embarrassing bumps around the mouth, which many people get from time to time. According to the website Whole Health MD, the true cause of cold sores is the herpes simplex virus, which can lie dormant in a person's body for years.

Cold sores generally appear on the outside of the mouth but they can also appear in the soft tissues of the mouth. They are caused by the herpes simplex virus. Hydrogen peroxide is just one type of home remedy that may be used to improve the symptoms associated with the cold sore.

According to the Mayo Clinic, cold sores are caused by certain strains of the herpes virus, including herpes simplex virus type 1 and herpes simplex virus type 2, though type is the most common cause of cold sores.