A 45-year-old patient complains of general weakness, headache, impaired memory, decreased appetite, enlarged tongue, dull abdominal pain, constipation, and hair loss. He has history of chronic gastritis type A alcoholism, and essential hypertension Objectively, the following is observed: cold and dry skin, edematous face, blood pressure - 140/80 mm Hg, pulse 62/min, body temperature - 36.2°