The common name for blepharitis is “wheals”. Clinical manifestations: 1) The affected area is red, swollen, hot, and painful, typical of acute inflammation. 2) Two to three days after onset, a yellow pus spot may form locally. 3) The inflammation decreases significantly after the blepharitis breaks down, and most heal within a week or so. 4) In children, the elderly, or in patients with weakness or poor resistance, blepharitis may progress to eyelid cellulitis if the causative organism is virulent. If left untreated, it may sometimes cause life-threatening sepsis or cavernous sinus thrombosis. Treatment: 1) If local inflammation is not obvious, local hot compresses and antibiotic eye drops or ointment can be used (e.g., tobramycin eye drops, 4 to 6 times daily; erythromycin eye ointment, 1 time before bedtime); 2) If local inflammation is obvious, recurrent or more severe, and accompanied by systemic reactions, especially in patients with poor body resistance, oral or intravenous antibiotics are required; 3) If an abscess forms, it is necessary to go to the hospital to cut open and drain the pus. Do not squeeze!