Psychological Symptoms and Mental Disorders
At levels only slightly lower than normal, a range of symptoms such as fatigue, depression, and poor memory may be experienced. However, these symptoms by themselves are too nonspecific to diagnose deficiency of the vitamin.
Vitamin B12 deficiency can also cause symptoms of mania and psychosis, fatigue, memory impairment, irritability, depression and personality changes. In infants symptoms include irritability, failure to thrive, apathy, anorexia, and developmental regression.
Read more about this topic: Vitamin B12 Deficiency
Famous quotes containing the words symptoms, mental and/or disorders:
“For anyone addicted to reading commonplace books ... finding a good new one is much like enduring a familiar recurrence of malaria, with fever, fits of shaking, strange dreams. Unlike a truly paludismic ordeal, however, the symptoms felt while savoring a collection of one man’s pet quotations are voluptuously enjoyable ...”
—M.F.K. Fisher (1908–1992)
“Libraries are reservoirs of strength, grace and wit, reminders of order, calm and continuity, lakes of mental energy, neither warm nor cold, light nor dark. The pleasure they give is steady, unorgastic, reliable, deep and long-lasting. In any library in the world, I am at home, unselfconscious, still and absorbed.”
—Germaine Greer (b. 1939)
“It no longer makes sense to speak of “feeding problems” or “sleep problems” or “negative behavior” is if they were distinct categories, but to speak of “problems of development” and to search for the meaning of feeding and sleep disturbances or behavior disorders in the developmental phase which has produced them.”
—Selma H. Fraiberg (20th century)