The neck is always itchy may be caused by contact dermatitis, and may be caused by eczema or ringworm. 1. Contact dermatitis: If the skin in the neck area comes into contact with irritating objects, such as irritating cosmetics or animal fur and pollen, it may appear itchy symptoms. 2. eczema: eczema is a relatively common skin disease, the main symptom is that there will be scattered or dense localized pimples, or there will be dry cracked skin, flaking and other manifestations, usually accompanied by itching symptoms. 3. Ringworm: ringworm is usually associated with fungal infections, the main symptom is that there will be localized erythema or flaking and other phenomena, there will be itching symptoms. There may be other reasons why the neck is always itchy, it is recommended to actively go to the regular hospital, a clear diagnosis, so that targeted treatment.