A 34 y.o. patient has been suffering from pulmonary tuberculosis for 7 years; he complains of muscle weakness, weight loss, diarrhea, frequent urination. Objectively: hyperpigmentation of skin, gums, internal surface of cheeks. AP- 90/58 mm Hg. Blood count: RBC- 3,1 × 1012/l, Hb- 95 g/L, C.I.- 0,92; leukocytes - 9,4 × 109/l, eosinophils - 7, segmentonuclear leukocytes - 45, stab neutrophils - 1, lymphocytes - 40, monocytes - 7, Na -115 mmol/L, K - 7,3 mmol/L. What is the preliminary diagnosis?