Possible: It is definitely possible. Many patients have allergies to peanuts. These allergies typically manifest as itching, rash or shortness of breath however it is possible to have a headache. I suspect the type of peanuts in the peanut butter are different or they have lost their headache inducing properties after being processed. I suggest trying a different type of nut that you can enjoy!
Answered 4/15/2014
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