I have a tendency towards dermatitis, dry skin, eczema, and I always itch after shaving--I can start itching because I think of it so I'm certain it's not shaving's fault, just a trigger. Anywho, I put lotion on and that takes care of the itch practically immediately. I also have cortisone cream as a back up. Be forewarned that if you try lotion, use something that's meant for your face, because you could really get bad acne with regular. (Been there, done that...)
I hope you feel better soon!
~Just as a note, I'm a 20 year old, dorm apartment-living female.