Itchy neck skin may be related to atopic dermatitis, neurodermatitis, eczema and other factors. 1. Allergic dermatitis: the neck is exposed for a long time, and is easily stimulated by external factors, producing an allergic reaction, such as mosquitoes, pollen, etc., leading to allergic dermatitis, the symptoms of itchy neck skin. 2. Neurogenic dermatitis: the cause of the disease is not clear, generally believed to be related to nervous system dysfunction, cerebral cortex excitation and inhibition process balance imbalance. Excessive mental tension, emotional fluctuations or excessive fatigue can induce this disease. Scratching and friction, sunlight exposure, excessive sweating or other physical stimuli can also be induced. The onset of intermittent local itching, gradually aggravated, more itchy with heat. 3. Eczema: related to the interaction of various internal and external factors, such as chronic infectious lesions, endocrine and metabolic changes, neuropsychiatric factors, consumption of fish and shrimp, inhalation of pollen, living environment, hot, contact with a variety of chemicals such as cosmetics, etc., eczema will appear in the neck, causing itchy skin phenomenon, there may be oozing. Patients with neck skin itching, it is recommended to go to the hospital in a timely manner, to clarify the cause of the disease and then follow the doctor’s instructions for treatment, so as not to delay the condition.