Itchy neck is mostly caused by abnormal changes in the skin and requires vigilance against the appearance of diseases such as atopic dermatitis, neurodermatitis, prickly heat, and liver disease. In particular, obese people, patients with frequent allergies, or in the summer period, are prone to the emergence of various skin diseases. If you feel itchy neck for a long time, it may be a sign of the occurrence of systemic diseases, and it is recommended to seek medical attention promptly. Common clinical conditions include: 1, allergic dermatitis: such as contact with pollen, domestic pet hair and other allergic substances, or the patient’s own allergy-prone body, the patient is prone to itchy neck symptoms, but also accompanied by sneezing, runny nose, wheezing and other symptoms, symptoms should be promptly away from allergens, if the symptoms are serious also need to take medication; 2, neurodermatitis: most commonly found in the neck, to The main performance of paroxysmal intense itching, often affecting sleep and quality of life. If the patient has long-term mental stress, anxious temperament, excessive worry, or long-term wearing hard collar, woolen fabrics, etc., can cause neurodermatitis due to chronic friction and scratching, this symptom; 3, prickly heat: also known as sweat rash, mostly seen in the summer, due to the hot and muggy environment resulting in a large amount of sweat is not easy to evaporate, retained in the lower layer of the skin caused by swelling, resulting in itching. Especially obese people because the neck crevice is not breathable, sweat accumulation too much, resulting in a large number of bacteria on the surface of the skin to produce toxins, can appear this symptom; 4, liver disease: liver disease patients often have the performance of itching around the body, in the process of disease progression, due to the different personal constitution, some patients will appear the performance of itchy neck, commonly in hepatitis, cirrhosis of the liver and other lesions. In addition, seborrheic dermatitis, diabetes or malignant tumors may also cause itching symptoms in the neck. After the symptoms appear, it is recommended to seek medical attention in a timely manner, after a clear diagnosis for symptomatic treatment, to avoid losing the best treatment time due to lack of attention to the disease.