Pimples usually refers to acne, and the identification of eczema is mainly in the different triggers, clinical manifestations. 1. Triggers: Although the causes of both are not yet completely clear, eczema is mainly caused by a combination of internal and external factors, such as chronic infection lesions, blood circulation disorders, etc. External factors are mainly caused by fish, shrimp, pollen, animal fur, etc., which can be relieved by avoiding contact with allergens; whereas acne is mainly due to the secretion of androgens, but partly also affected by endocrine and emotional factors. 2. Clinical manifestations: eczema occurs on the face, ears, hands, feet, self-conscious itching, scratching, hot water can aggravate the lesions; acne occurs on the cheeks, forehead, often accompanied by large pores, lesions can be seen in whiteheads, blackheads and other conical pimples, general symptoms of self-consciousness is mild, secondary infection occurs in the local skin of redness, swelling, heat, pain, usually not accompanied by itching. Skin abnormalities should be timely consultation, to prevent delays due to untimely treatment.