Hi. It's very interesting reading all your comments. My 16 year old son was diagnosed with HS last year. He had Glandular Fever this year and was very anaemic and lethargic, nearly needing a blood transfusion, but ended up OK. Apart from being tired all the time and irregular sleeping, he is fine. My 3 year old has just been diagnosed. He doesn't eat much at all and has behaviour problems. Does anyone know if this is related to HS? I apparently don't have it and either does my husband or any of our extended famililes. I have read a post a lady wrote saying you can be tested numerous times and have a negative result when it is indeed positive... is that true? What other illnesses do I have to watch out for besides glandular fever? My 3 year old nearly always has a cold and is sooo cranky. Thanks and I look forward to your replies, even just your own stories would be great.