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In page Anemia:

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Iron-deficiency anemia may give symptoms that can include spoon-shaped nails, restless legs syndrome, and pica (the desire to eat things which are not food, such as ice, dirt, etc.).[12] A blue coloration of the sclera may be noticed in some cases of iron-deficiency anemia.[13] Vitamin B12 deficiency anemia may result in decreased ability to think, memory loss, confusion, personality or mood changes, depression, difficulty walking, blurred vision, and irreversible nerve damage.[14][15] Other specific causes of anemia may have signs and/or complications such as, jaundice with the rapid break down of red blood cells as with hemolytic anemia, bone abnormalities with thalassemia major, or leg ulcers as seen in sickle cell disease.[citation needed]