Hi and thanks for the query,
itchiness and soreness imply there is an active inflammatory response going on. This could be simply an acute inflammation, a chronic inflammatory disease or most importantly an allergy
I suggest you get consulted by your primary care
physician, for appropriate exams and specific diagnosis. Chronic inflammatory conditions, infections or allergic reactions at the origin, if not properly diagnosed will not be properly treated.
An early proper diagnosis shall be important in adopting an appropriate treatment plan.
Thanks and best regards,