Introduction & Objectives: . The most common in dermatological practice are psoriasis and acne, the
pathogenesis of which today is considered from the standpoint of immunopathological diseases. The article
analyses features of anamnesis, clinical, instrumental and laboratory tests related to chronic dermatitis (acne,
psoriasis, arthropathic psoriasis (АР)), considers the relationship of probable mechanisms of disease aggravation
and progression.
Objective. The objective of our work was to improve the diagnostics of common chronic dermatoses (acne,
psoriasis, АР) taking into account some indicators of the immune system and features of the disease course to
specify their role in pathogenesis of these disease.