Vitamin B12 deficiency symptoms may include tingling at night September 17, 2022 by ketodietcenter Vitamin B12 deficiency: the sign of low levels you’re most likely to notice ‘at night’ Express 5 signs of vitamin B12 deficiency News18 See full coverage on Google News Share on FacebookTweet Black neck will be cleared in a pinch... just do these 5 remedies sitting at home