Rosacea, also known as red nose, is a common facial skin disease. Because the lesion is on the face, it belongs to one of disfiguring skin diseases and is a major problem in beauty. Rosacea usually begins in middle-aged and elderly people. At first, it manifested as recurrent paroxysmal facial flushing. A slight emotional change will turn your face red, especially your nose. With the development of the disease, facial capillaries repeatedly dilate and congestion, resulting in permanent telangiectasia. At this time, the redness and swelling of the face, especially the nose, becomes lasting. Further development, the patient's nose tissue will proliferate and hypertrophy, showing a strawberry-like red nose. In addition to vascular changes, this disease is often accompanied by small blisters, pustules and so on. And there is a lot of facial oil, so it is often called "rose acne" in medicine. "Acne" is acne. Unlike acne, rose acne is more common in middle-aged and elderly people, while acne is determined by young men and women; Rose acne can appear small papules and pustules, but there is no acne, and acne has acne; Rose acne has facial paroxysmal flushing and telangiectasia but acne does not; Acne can occur in any part of the face, and rose acne has five points, namely forehead, middle eyebrow, nose, cheek and neck. Finally, rose acne may have a bigger nose, but acne will never. The etiology of rose acne is still unclear, and it is generally believed that there is a clear relationship between emotion and facial paroxysmal flushing. Medical research shows that this disease is obviously related to another angioneurotic disease-migraine, which also supports this view. Therefore, proper control of emotional changes is conducive to delaying the progress of this disease. Food is often regarded as the cause of many diseases, including alcohol. Because the yellow race lacks an enzyme, many people will turn red after drinking it. Therefore, it is necessary to drink less or not. Other foods that are often criticized are irritating foods such as pepper, coffee and tea, as well as hair products such as beef and mutton, sea fish and shrimp. However, the relationship between these foods and rosacea is still inconclusive, and not all patients get worse after eating. So don't cut across the board, or according to your own situation, don't eat if it gets worse, otherwise it's useless to avoid it. Another widely accepted reason is skin mite infection. In 1980s, Fu Yuling's treatment of rosacea caused a great sensation. In fact, dermatophagoides pteronyssinus, also known as hair follicle sebosis, is a normal microorganism parasitic on human body, which can be detected in more than 95% people's skin. The method of inspection is simple. Just scrape your nose with a special curette, and then check what you scrape with a microscope. It is effective to treat pimples and pustules of rosacea with metronidazole, which can kill mites. However, metronidazole can kill other skin parasitic bacteria at the same time, so it is not completely certain that mites are the cause of rosacea. Other skin parasitic microorganisms, such as Corynebacterium acne and Pythium ovatum, may also play a role in the occurrence of this disease. The disease progresses slowly, and there is generally no acute attack, so there is no obvious itching and running water. If the above situation occurs, it may be related to allergies, and rosacea should not be considered only. We once treated an elderly patient with rosacea, with repeated skin lesions, running water and itching. After allergen examination, he was found to be allergic to frames. After switching to other frames, his attack was obviously alleviated. It's not terrible to get rosacea, but it's terrible to lose confidence in fighting the disease. Patients must actively cooperate with the treatment, because rosacea is a persistent disease and needs a treatment process. Therefore, patients should be patient in the treatment process and avoid impatience. In fact, many patients can be completely cured through active treatment.