Allergic Reaction

Its been 12 days now since my TKR . I had an allergic reaction to the adhesive strips and its driving me crazy. I was on a predisone pk for a week and it itches so bad. My dr told me to use Benadryl and hydrocortisone cream . But im taking Benadryl every 2 hours as it itches so bad, which in return makes me so tired. Any other suggestions to make me quit itching? Thank you so much!!

you need a stronger antihistamine good luck