Iron deficiency anemia is the most common type of anemia worldwide. Some people have obvious symptoms, while others experience none at all. This often depends on the severity of the anemia. Common signs and symptoms include tiredness, pale skin, feeling short of breath, and dry and damaged hair and skin.
Night Blindness (Nyctalopia) is a symptom of an underlying disease such as a retina problem. The blindness prevents you from seeing well at night or in poor lighting. There are many possible causes and treatment depends on identifying that cause.
Hypocalcemia, also known as calcium deficiency disease, occurs when the blood has low levels of calcium. A long-term calcium deficiency can lead to dental changes, cataracts, alterations in the brain, and osteoporosis, which causes the bones to become brittle. A calcium deficiency may cause no early symptoms.