My scalp was incredibly itchy, as was my face, and especially my nose and eyebrows. I had not had any
antihistamine products, cold medications or antacids in the 10 days prior to the test. The allergist gave me an anti-histamine to control the reaction (cetirizine), but told me that he thought I had most likely outgrown my nut allergy as I did not react to the SPT. However, he could not tell me what I was reacting to -- hypothesized possibly heat, my own sweat, or idiopathic reaction.