But, at young ages, the virus doesn't tend to cause symptoms. What Teens Can Expect A few weeks after being exposed to the virus, a teen usually shows the first signs of mono. These include tiredness, headache, chills, puffy eyes, and no appetite. Treatment usually only involves rest and self-care. Teens also need to be careful about tearing their spleen, a gland in the upper abdomen that can swell when someone has mono.
Most teens feel better after a few weeks of rest and self-care.
However, many report feeling tired for months after symptoms clear up. Your Teen Cope with Mono Have your teen suck on throat lozenges or gargle with salt water to soothe a sore throat. Encourage your teen to rest and drink plenty of liquids. Avoid aspirin, which can cause a rare disease in children and teens. It's a good idea for all teens with mono to avoid heavy lifting, strenuous exercise, and contact sports for about four weeks to avoid rupturing their spleen.