Vitamin B12 Deficiency: A Rare Cause of Excessive Daytime Sleepiness

J Clin Sleep Med. 2019 Sep 15;15(9):1365-1367. doi: 10.5664/jcsm.7936.

Abstract

None: Excessive daytime sleepiness (EDS) is one of the leading reasons that patients present to sleep clinics. Approximately 10% to 14% of the adults report that excessive sleepiness interferes with their daily lives. Common causes of EDS include obstructive sleep apnea, sleep deprivation, circadian rhythm disorders, medication effects, psychiatric conditions especially depression, and primary hypersomnia such as narcolepsy or central idiopathic hypersomnia. Vitamin B12 deficiency is a rare cause of EDS. We are presenting a case of severe vitamin B12 deficiency as an unusual and rare cause of hypersomnia.

Citation: Khawaja I, Yingling K, Bukamur H, Abusnina W. Vitamin B12 deficiency: a rare cause of excessive daytime sleepiness. J Clin Sleep Med. 2019;15(9):1365-1367.

Keywords: excessive daytime sleepiness; excessive sleepiness; hypersomnia; obstructive sleep apnea; sleep disorders; vitamin B12 deficiency.

Publication types

  • Case Reports

MeSH terms

  • Aged
  • Disorders of Excessive Somnolence / drug therapy*
  • Disorders of Excessive Somnolence / etiology*
  • Humans
  • Male
  • Vitamin B 12 / therapeutic use*
  • Vitamin B 12 Deficiency / complications*
  • Vitamin B 12 Deficiency / drug therapy*
  • Vitamin B Complex / therapeutic use*

Substances

  • Vitamin B Complex
  • Vitamin B 12