UDC: 617.77-002:616-056.3]-06-07 

Abstract. Blepharitis is a very common disease in ophthalmology, dermatology, and allergist practice. It can be acute or chronic. Acute blepharitis is most often caused by viruses (Herpes simplex and Varicella zoster) and bacteria (Staphylococcus). Chronic blepharitis is a symptom of allergies, metabolic syndromes most often associated with liver disease, autoimmune diseases, fungal infections, and Demodex. The liver is a vital organ that supports immunity, metabolism, digestion, stores vitamins, and is responsible for detoxification. Therefore, liver dysfunction can also cause skin lesions around the eyes. Stress, through the activation of the pituitary-hypothalamic-adrenal system, promotes cell activation and the release of biologically active cytokines, which in turn
is a factor in skin damage. Clinically, blepharitis is manifested by redness, itching, and swelling of the eyelids, sometimes the formation of scales on the eyelids. As a rule, both eyes are affected and the disease has a recurrent course. In most cases, blepharitis does not pose a threat to the patient's life, but it reduces the quality of life and is dangerous for the development of such complications as conjunctival lesions and the formation of corneal marginal ulcers.
The article presents clinical cases of patients with chronic blepharitis who had similar symptoms but differed in etiology and treatment regimens.
Key words: blepharitis, contact dermatitis, toxic blepharitis.