Itchy Scalp, but no redness or flakes?

Think about what type of shampoo and conditioner you are using? Sometimes a cheap (crappy) brand will cause this because of the chemicals. I used a Swartskopf one or whatever its called and it burned and itched my head like crazy lol. Also definitley the change of weather could irritate it just like it could with your face. like being in cold then hot then cold then hot conditions etc