Glandular fever -how long?

I have this friend and he's missed alot of school lately because he had a really bad cold and now he's been diagnosed with Glandular Fever...

He said he's had it for awhile now but he didn't know what it was until now..

How long is it gonna last for?

Glandular fever often starts with a few days of mild symptoms, including headache, and tiredness. The major symptoms then develop, and may last seven to twenty one days. They vary in how badly they affect you, but usually include a fever, sore throat, and tiredness, along with aches and pains all over the body.

This phase of the illness may last a few days to a few weeks. It is accompanied by tender enlargement of the glands (the lymph glands or lymph nodes) which are around the body to help defend against infection.

A small number of people (about one in ten) develop a faint red rash on the trunk and limbs. Sometimes the liver may become inflamed (hepatitis), even to the extent of making you go yellow (jaundiced).

After the worst of the initial symptoms have passed, most people continue to feel tired all the time, and easily exhausted. This is frequently accompanied by depression.

After a period of weeks or months, most people return to normal.

I have Glandular Fever at the moment and I've had about 3 weeks off school so far and I don't feel any better.

It really just depends on how it affects him, as to how long he will have off. He shouldn't do too much too soon as this can make it last even longer as the body hasn't recovered properly.