Rosacea, also known as rosacea, rosacea and rhinorrhea, is a chronic inflammatory skin disease that occurs on the nose, mostly in middle-aged people. The disease can be triggered or aggravated by gastrointestinal disorders, endocrine disorders, nervous tension, focal infections, alcoholism, spicy and irritating foods, hot and cold stimuli, etc. The disease is usually manifested as redness of the skin on the nose, but the tip of the nose is the most red. It usually manifests as redness of the skin on the nose, but is most pronounced at the tip of the nose. This is the result of the obvious expansion of blood vessels, sometimes through the skin can see the expansion of small blood vessels in the form of dendrites because of the local sebaceous glands secretion, the nose appears red and bright; further development of the disease, the skin can be thickened, and even grow rashes or small pustules, the appearance of rough and uneven, very much like wine lees, so the name rosacea nose. In severe cases, the skin of the tip of the nose thickens significantly, and the rough tip of the nose increases significantly as if a tumor has grown. At present, it is believed that the occurrence of this disease is mainly related to the infection of hair follicle worm mite. Typical rosacea usually occurs after the age of 30 and is characterized by redness on the cheeks, nose, forehead or chin, with symptoms that are sometimes good and sometimes bad. Over time, the redness gradually worsens and persists, along with the appearance of dilated capillaries, known as rosacea subtype 1 (capillary dilated). Facial bumps and papules will appear with the aggravation of the redness, which is rosacea subtype 2 (papulopustular type), and this type is mostly a progression of subtype 1. Some patients, especially men, develop rosacea subtype 3 (lumpy), which is characterized by thickening of the skin and often results in enlargement of the nose due to excess tissue. The eyes of many patients are also affected, known as rosacea subtype 4 (eye type). The eyes of this group of patients are often watery or easily congested, along with irritation. Patients often experience burning and pins and needles sensations in the eyes, feeling unusually dry, itchy or mildly irritated. Patients with this type are susceptible to mydriasis and can become blind in severe cases due to corneal lesions. Patients usually have characteristic manifestations of more than one subtype, and in most cases, any one patient may present with a variety of symptoms.