including the neck on either side of the front, sides, and back, behind your ears, on the back of your head, or under your jaw and chin. Swollen lymph nodes are also called lymphadenopathy.

cracked skin with a silvery sheen on the back of the neck. Bites from insects, including mosquitos, spiders, bed bugs, and fire ants, can cause a skin rash, itching, and swelling. When an insect ...