<s>[INST] I was stung by a wasp on the low back part of my leg at 11:20am today. I did have a reaction consisting of hives on my leg, flashing of skin on my foot, I felt hot all over and felt like some pins were sticking in me, my throat got slightly tight. I did call my doctor. I took Zyrtec and put a anthistamine cream on area. All of the above problems are gone except for pain, redness and swelling on foot. The swelling on my ankle and right side of my foot appears to be still slowly swelling bigger?? What can I do for the pain and swelling...Kat [/INST] Hi. Welcome to Chat Doctor . I have gone through your query and can understand your concerns. As per your complaint you have got an allergic reaction to the poisonous chemical left by the wasp stinger under the skin causing the above explained symptoms as well as swelling, pain and redness are due to localized reaction of the sting at the site of bite. You should continue taking Zyrtec as it is anti-allergic medication and as it has suppressed the generalized allergy symptoms it will also help in relieving localized symptoms. Take anti-inflammatory painkiller like Ibuprofen for pain relief. Do cold pack over the inflamed area. Take a close look at the affected area and if the wasp stinger is embedded in the skin either remove it yourself or get it removed by a doctor as stinger keeps releasing toxin under skin. Apply Steroid based ointment over the swelling. Apply numbing gel over the swollen and painful area for relief. If after all this also there is no improvement you should consult your doctor in his clinic and get evaluated as there can also be infection at the injury site which then will have to be treated with antibiotics. Hope you get well soon. Thanks and regards. Chat Doctor. . </s>