Hello,
This is a very complete and remarkable history you provide. However, it is not so remarkable, but par for the course, in a child with an
immunodeficiency. The hallmark of an immunodeficiency (of which there are many kinds) is a patient who suffers many infections.
Sometimes, these deficiencies run in families. Following a prolonged febrile
seizure, doctors might wish to place the child on an anti-seizure medication prophylactically to lessen the chance of another seizure should your son get another
fever.
After he recovered from the seizure has he been developing normally? With so many ear infections, I hope you are making certain that his hearing is being closely monitored.
Allergy and immuno-deficiencies are often studied by the same physician. In one children's hospital where I trained it was the allergist who saw both of these kinds of children.
If it hasn't already been done, I suggest that your toddler's
primary care physician refer you to a sub-specialist such as this or, better yet, to an immunologist only.
Hope I have answered your question. Let me know if I can assist you further.
Regards,
Dr. Arnold Zedd, Pediatrician