2 year-old with 7 high fevers in 5 months

[wixie777]

My 2 1/2 year-old son has had so many fevers in the past 5 months.  He was in day-care since he was born, but has been at home with his dad and sisters now instead, and was never sick this much then.  His fevers run very high.  In Dec it was 104+ with no other symptoms, Jan -2 different times he had 103-104 degree fevers with stomach flu symptoms (2 weeks apart, each lasting a few days), feb he had a 104 temp with lethargy, fatigue ets, march he had a febrile seizure (105+ degree temp-went to urgent care), then in april he had Croup with 104-105 degree temp (went to ER), now he just got over Pneumonia,with swollen tonsils 2 weeks ago (his temp went up tp 106.5, his eyes rolled back in his head and he was talking nonsense-again went to ER).  Now he is showing symptoms of a UTI and is going to see the doctor again tommorow.  His primary care Dr. knows about all these fevers, and says once he's been over an illness for long enough she will do blood work because she doesn't want the results to be off because of the antibiotics.  
I don't know why he is sick so much.  It worries me, because his sisters never catch any of it before him, or from him (they're 2 and 4 and go everywhere together).  I just keep worrying all the time in the back of my head that theres something else going on.  I don't know why he'd be so sick or what could cause him to get so many fevers/infections?
What could it be?

[Lime_Noodles]

           Often times, children with recurrent fevers have what used to be called "Chronic Cold Syndrome". This is more or less an immune system condition. It means that they don't have a strong enough immune system to fight off what the rest of us are capable of. I have it as well, and I know that fevers/colds become common even in the summer, when people normally don't get colds. I know it was the reason I have had pnemonia every year for 3 years. I used to get strep throat on a yearly basis.

             Not knowing the child or seeing his behavior on the other hand makes it very hard for me to say that that's his diagnosis. Until you can get him healthy enough for tests to be run, try to keep him up on important vitamins and a good deal of Vitamin C and B. Don't let him have sugary foods/drinks, because viruses feed off of sugars. They'll tell you stay away from sweets when you have yeast infections, the same goes for almost all infections.
      
            I wish you and your son well and do hope that he gets better. I know that as a mother, you must be so stressed out and worried over the health of your son. Don't forget to take good care of yourself so that you don't fall ill as well. Stress really wears down on your immune system. Again, I wish you luck in finding your answer.

[Dr. Kokil Mathur]

I am sorry to hear about your son and wish him a speedy diagnosis and recovery.
Recurrent or chronic fever is seen in tuberculosis, SLE, rheumatoid arthritis, Polyarteritis nodosa (PAN) and other auto immune disorders, UTI, drug fever, glandular fever, endocarditis, parasitic infestations, fungal infections, lymphomas and other cancers etc.
A comprehensive investigation is required keeping all the points in mind. Your primary care is right about waiting for sometime before running the tests.
Hope this helps. Please let me know if there is any thing else and do keep me posted. Take care!