Hello. Thanks for writing to us at healthcaremagic
Judging from the history, I would keep a possibility of
Allergic Contact Dermatitis (ACD) to an antiseptic solution e.g
betadine solution Or topical cream that you may have been using post-procedure. ACD is likely because the condition is itchy and it started immediately after surgery.
I have seen a lot of cases of ACD to betadine solution which is commonly used pre-operatively for antisepsis and post-operatively for wound cleaning and dressing.
If I was the treating doctor I would have tried to find the implicating factor that would be causing
allergy.
Specific treatment for ACD would be twice daily application of a potent
steroid + antibiotic combination cream.
I would have also started you empirically on oral antibiotic since there is a chances that the dermatitis may become secondarily infected.
An OTC oral antihistamine e.g
cetrizine would provide you symptomatic relief from itching.
Regards