Symptoms to note: Sand fly bites are generally painful and may start to itch. In certain parts of the world—including the tropics, subtropics, and southern Europe–they can transmit leishmaniasis, a ...

Whether you first notice a sharp pinch, a nagging itch, or a painful sting, discovering a brand-new bug bite—sometimes instantly, but often only days later—is no fun. Some ache, some beg to be ...