Unlabelled: Lichen planus of the oral mucosa (LPOOR) is a chronic autoimmune disease. With a complicated course of the disease, other clinical and pathomorphological signs are added to the clinical picture of the reticular form, including blisters in the bullous form of the disease. It is known that LPOOR develops mainly by the mechanism of delayed-type hypersensitivity reaction, and in complicated forms - with the addition of a true allergic reaction of immediate-type hypersensitivity.
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