Positive result after retesting for peanut allergy.  History of having gastro problems.  Possible missed diagnosis of allergy earlier?
Patient: My 14 year old daughter just got re tested after 2 yrs for a peanut/tree nut allergy.  She is still testing positive.  She developed this allergy at age 12, but had gastro problems at a younger age.  Could this allergy have been missed early on, and at a later age when she developed throat swelling and eyelid swelling at age 12? Doctor: Hi,Thanks for writing in.Your daughter is suffering from hypersensitivity to peanut. This might have gone unnoticed in earlier years because of limited exposure to the allergy causing agent. When a patient is exposed to the allergy causing agent the first time, it usually doesnt cause a significant reaction. When there is the second exposure, there will be severe reaction because by that time antibodies have developed against the allergy causing agent. That is why she is testing positive subsequently while it might have been missed in early days.Hope this helps