The difference between rashes and eczema is mainly in the causes and treatment modalities, and the exact diagnosis needs to be determined by timely medical examination. Erythema is usually a symptom of a skin lesion and is not a type of disease. It is usually caused by acute infectious diseases such as rubella and measles, and can also be caused by fungal infections. Its treatment needs to be chosen for the cause. Eczema refers to a type of disease, is caused by a variety of internal and external factors stimulation caused by the inflammatory reaction of the true epidermis, commonly used in the treatment of drugs such as glycerine lotion, boric acid solution, halomethasone cream, cetirizine and so on. When you find relevant symptoms, you should consult a doctor in time, and should not take medication without authorization, so as not to delay the condition. Pay attention to rest on weekdays and avoid overwork.