What do the symptoms caused by mosquito saliva generally include?

The symptoms caused by mosquito saliva are primarily characterized by itching and red welts. When a mosquito bites, it injects saliva containing anticoagulants to prevent blood clotting, which triggers an immune response in the body. This reaction leads to localized swelling and irritation in the skin, causing the distinctive itchiness and the appearance of red welts where the bite occurred. This immune response is a normal part of the body's defense mechanism and varies in intensity among individuals. The other options relate to symptoms commonly associated with general illnesses or infections rather than the localized reaction to mosquito bites.