<s>[INST] I got bitten by a mosquito about 4 days ago & I kept scratching cause it was so itchy! To try to prevent myself from scratching, I got a cotton ball, put alcohol on it, & sticked it on my itchiest bite with a band-aid. I had it on for about a day & a half & now that I took it off, the bite appears to be more spread out & it has tiny bumps on it that have the feel of a rash. It s also still quite itchy. Could it have been an allergic reaction to leaving the cotton ball full of alcohol on for so long? [/INST] Hi, thanks for using healthcare magicIt is an allergic reaction probably to both the mosquito bite and also to the materials that were in contact to the skin.Treatment would involve the use of oral antihistamines. Examples are benadryl, claritine, zyrtec, allegra.The use of a mild topical steroid such as hydrocortisone would also help.I hope this helps </s>