4. Muscle Ache
Another symptom that is more common in the older generation is muscle ache. Muscle aches are common alongside a fever but in this case, they can occur on their own. It can feel like general lethargy but focussed on the muscles – as though you had done a big workout or walked a long distance. Engaging in regular tasks might become more difficult.
Again, these symptoms are relatively hard to spot and when you combine this with the lower incidence in the adult population, it’s easy to see why mono has a reputation as being a ‘teenage’ illness.
This also further explains the ‘kissing diseases’ label, seeing as teenagers are also known for doing a lot of that!