Skin diseases seem to be simple, but they are not. Skin diseases are often the manifestation of systemic diseases in the skin, and unreasonable daily life, including diet and nutrition, life rhythm, work stress, psychological factors, etc., can lead to the development of diseases. For example, nodular acne, due to an uncontrolled diet and a taste for cold and greasy food, leads to poor secretion of sebaceous glands and the accumulation of sebaceous glands to form cystic nodules with a grayish color. There are many different factors such as the lack of effect of medication, etc. In short, daily life is crucial in the development of the disease to recovery. Please live carefully and exquisitely, friends.