How is chronic eczema caused?

Chronic eczema has many specific causes that are not very clear. But for most chronic eczema, some belong to the development of acute eczema, and some may belong to chronic allergies. These allergies may form chronic damage to the skin after a period of time, mainly manifested as skin hyperplasia, hypertrophy, itching, scaling, and even scab performance. In addition to allergic factors, it may also be caused by chronic infections, such as long-term pharyngitis, or long-term local skin infections, which can also cause repeated chronic eczema.