The main reason for this small article is that there are more patients of this type in the outpatient clinic and the misdiagnosis rate is extremely high. Blepharitis is one of the main causes of itchy eyes, especially scaly blepharitis, where itchy eyes are the main symptom, and it is very easy to misdiagnose and mistreat because doctors often neglect to examine the lid margin or are not aware of the condition. Scaly blepharitis: One of the three types of blepharitis, these patients tend to have a high secretion of the sebaceous and lid glands of the eyelids, and the affected area is often found to have oval dermatophytes, which break down lipid substances into irritating fatty acids. Various physical and chemical stimuli (wind, dust, smoke, heat, etc.), reduced systemic resistance, malnutrition, lack of sleep, refractive error, visual fatigue, long-term use of poor quality cosmetics, and unhygienic eyes are all contributing factors. Patients mainly feel itching, stinging and burning sensations in the eyes. The lid margin is congested, with epithelial scales adhering to the eyelashes and lid margin surface. The surface of the lid margin may be dotted with sebum, which collects at the root of the eyelashes and forms a yellow waxy secretion that dries and crusts over. If the inflammation remains untreated for a long time, the lid margin may become hypertrophic with a blunt, rounded lip that does not allow close contact with the eyeball, and if there is conjunctivitis, the tear dots may become swollen and turn outward, causing tearing. Scaly blepharitis goes hand in hand with lid gland dysfunction and dry eye and affects each other. Treatment: It is important to remove the scab so that the excess secretion of the lid sebaceous glands and the lid glands can drain freely. Since patients often have difficulty understanding how to remove the scabs, and for patients with more pronounced scabs, I have to do it myself once at a time in the clinic to teach them by hand because I am worried that they will not know how to handle it at home, otherwise the effectiveness of the treatment will be greatly affected. The first thorough cleaning is very important, even if they go home and do a substandard job, it is not a big problem. My usual method is to squeeze fusidic acid eye ointment onto a cotton swab and scrub the lid margin back and forth until all the dry scabs are removed, then apply another layer of eye ointment with the swab. For obvious lid margin congestion there is also a combination of weak hormonal eye drops. Of course, artificial tears are indispensable, and the ones I commonly use are preservative-free. In addition, treatment should remove the cause, avoid all irritants, correct refractive errors if any, treat other chronic systemic diseases if any, and pay attention to nutrition and physical exercise to increase body resistance. There are many patients who have been troubled by this disease for years, and finally we have cured them all. One of these patients made a video of me cleaning his lid margin. Although it is not a very important disease and does not affect the patient’s vision much, it has caused problems in the lives of many patients. One woman, in her eighties, told me that she had been suffering from this disease for more than ten years and now she was finally cured. Whenever this happens, I feel that it is worth the extra effort I put in to help them personally perform a cleaning.