An allergic reaction can cause a neck rash with urticaria (hives), or raised, red, itchy bumps or welts. Allergic reactions to foods or environmental allergens often cause a rash on the face and neck.

Itchy skin can occur on any part of your body but is more likely to occur on your: face limbs neck chest back You may also experience itchy skin on your elbows and the T-zone of your face.

Itchy welts can occur within a few days of ... Bites usually appear on areas of skin exposed while sleeping, such as the face, neck, and arms. Spots of blood will be visible on a person’s ...