A man presents with weakness, pain in upper abdomen, hyperpigmentation, arthritis, hyperglycemia and enlarged palpable liver. Most probable diagnosis is -

Hemochromatosis is a condition in which amount of total body iron increases. Excessive iron causes damage to several organs. Fatigue and arthropathy are early symptoms. Leaden Gray skin pigmentatìn, hepatomegaly, arthritis, diabetes mellitus, cardiac failure are also present.