The skin around the base of my throat/collar bone it really itchy and nothing seems to help. theres no rash or redness (other than from me scratching)?

Necklace Sensitivity: Very commonly the area of the neck is irritated by clothing or jewelry. In the case of costume jewelry, some individuals are allergic to a component of the metal such as nickel. If the chain, pendant or a suspended ring contains the metal it will cause itching and then a possible rash if ongoing exposure. Some types of fabric often do this as well with perspiration activating the reaction.