<human>: I had an allergy test yesterday.  The scratch test, which consisted of dipping a multipronged plastic device into the allergins and then pushed hard on my forearm, produced large welts on my arm and allergy was noted.  I was given reactin at the time.  The swelling and redness has continued and worsened since yesterday.  I went to a walkin clinic and was prescribed a steroid topical and benedrl which I have used since last night.  The redness and swelling have increased and the itching is unbearable.  Might this be an infection?  The technician was new, I was her first ever patient!  Thank you for your help!
<bot>: These are TH allergens we inject in body you are exposed to large number of allergens and if you have many allergies the condition become like this it takes 3 weeks to subside allergy when exposed to allergen to which you are you start with doxycycline 100 mg BD for 5 days to counter infection if any continue local application as many times as you want start with antiallergic fexofenadine 120 mg BD for 2 waif not controlled take short house and taper it of oral steroidsdont worry it happens in many cases