Mono, formally known as mononucleosis, is a virus that develops in and is transmitted through saliva. Many people call mono the "kissing disease." Mono occurs most commonly in children, adolescents and young adults. Mono symptoms develop four to eight weeks after initial exposure and clear up on their own in two to six weeks. There isn't a cure for mono, but recognizing the symptoms will help you to rule out other diseases as a diagnosis.
Extreme Fatigue
Many people with mono experience extreme fatigue or weakness, so much so that it can be extremely difficult to make it through the day without dozing off. It is a good idea to stay home and get as much rest as possible. Your body needs ample rest to fight off a virus. Forcing yourself to continue working or going to school will only extend the duration of your symptoms.
Fever and Sweating
Mono causes a fever in most people. Monitor the fever over time and notify your doctor if it exceeds 102 degrees Fahrenheit. You may also experience bouts of waking up in the middle of the night, dripping with sweat; these are called night sweats. There is no great cause for alarm. Night sweats are the body's response to fighting off the fever.
Gland-Related Symptoms
Because mono is transmitted through saliva, you may experience a sore or scratchy throat. Your lymph nodes (the fleshy parts of your neck under the jawline) may become swollen. Swollen lymph nodes feel like little knots along the side of your neck. Additionally, your tonsils may become swollen and in severe cases, pus may develop. Gargling with warm salt water can help to combat these symptoms and dilute any pus that has formed.
Flu-Like Symptoms
Flu-like symptoms, such as headache, nausea or loss of appetite, may occur. It is important to support your body while it fights off the virus. Eating light foods, such as crackers or broth-based soups, can provide your body with energy and help to reduce your nausea. Taking an over-the-counter non-steroidal anti-inflammatory drug (NSAID) can help to relieve your headache.
