I got a mosquito bite on my upper eyelid over night and my eye is swollen, stinging, itchy and sore. i've put a cold cloth on it but it hasn't helped.

See an eye doctor or: PCP. You have a preseptal upper kid cellulitis developing that requires an antibiotic coverage orally and topically. Don't delay! The bite is causing the lid to swell. Cold compress may not help that much. Warm compressing may be better for 10 mins. four times a day. This can turn into orbital swelling. So don't sit on it, or you'll need IV ABx in the hospital. Prevention is key!

See answer: Swelling of an eyelid from a mosquito bite isn't unusual and suggest an allergic type reaction. It should respond to an antihistamine such as Benadryl (diphenhydramine) or Zyrtec. If the condition gets worse check with a physician to be sure no infection is present