Kazan medical journalKazan medical journal0368-48142587-9359Eco-Vector9024410.17816/kazmj90244Research ArticleTo the pellagra clinicNimtsovitskayaM. A.info@eco-vector.comZarbeevaV. S.info@eco-vector.com151119332911-128928971212202112122021Copyright © 2022, Eco-Vector2022<p>Pellagra is a widespread disease in Italy, Spain, Portugal, the countries of the Balkan Peninsula, Romania (the latter affects about 50,000 people annually), Persia, India, Egypt and over the past 20 years in America.</p>Kazan Medical archiveКазанский медицинский архив