There are many diseases that can cause itching on the sides of the neck, which can be categorized into infectious, non-infectious and systemic diseases. Infectious diseases include flat warts, ringworm, and folliculitis. Non-infectious skin diseases include hives, prickly heat, eczema, solar dermatitis, contact dermatitis, seborrheic dermatitis, drug rashes, mite dermatitis, neurodermatitis, and so on. Systemic diseases including hyperthyroidism nephritis, lymphoma, diabetes mellitus, leukemia, uremia, obstructive jaundice, etc., can cause neck skin itching, but the generalized skin itching is more common. Therefore, if you find that the skin on both sides of the neck itchy situation, we should go to the hospital as soon as possible for examination, symptomatic treatment, so as not to delay the condition.