Chronic lymphocytic leukemia (CLL) is the most common leukemia in adults. Anemia is world health problems and common medical conditions seen in clinical practice. We report the case of a 47-years-old woman who presented pain and obvious changes in hallux. With regard to available symptoms, special issues like strike, CLL, banned veins of foot and occult blood was guessed as a general mechanism of disease. But the result of performed tests and the effect of used drugs exclude all mentioned problems and low hemoglobin level was recognized as the only crucial cause of disease. With according to the results of blood counts and symptoms, disease for CLL, after performing tests and treatment of disease with iron supplementation, we recognized that particularly iron deficiency is the essential cause of disease.