Last night I started to itch behind my ears and on the back of my neck. This morning, I have woken up with a swollen cheeks, puffy eyes, rash on front and back of neck and shoulders. My skin on my face it warm to touch and slightly shiny. Yesterday we were renovating and needed to remove gib which created a bit of dust but not a great amount....even so, its only a small room and all three windows were wide open. If the symptoms persist throughout the day, should I visit my GP or is it likely to just be an allergic reaction to something?