certainly a peanut sensitivity (allergy? food intolerance? ) may exist. il would think it wise to have an allergist test your child for a peanut allergy just to be safe. in the meantime avoidance of peanut products would be prudent.
my 3 yr old has thrown up twice after eating peanut butter and a peanut cliff bar but has eaten peanut butter before. i'm wondering if this could be an onset of an allergy. she also has some itchy patches on her chin below her lip. should i see a doctor?