Many nonspecific symptoms that are widespread in our time, such as increased fatigue, irritability, impaired cognitive functions, sleep disorders, or vice versa - drowsiness, poor appetite, impaired twilight vision, cracks in the lips and in the corners of the mouth ("jams"), acne rash, boils, frequent "barley", easily occurring hemorrhages in the skin, bleeding gums - the most common external symptoms of polyhypovitaminosis.