Vitamin deficiency can cause a number of symptoms, including fatigue, dry skin and hair, depression, poor wound healing, and more. While they can vary between deficiencies, many of them overlap. Usually, noticeable effects don't begin to develop until you've had low levels for several months. bone loss depression type 2 diabetes heart disease multiple sclerosis An estimated 1 billion people around the globe have low blood levels of the vitamin ( 4 ). One research review found that • Symptoms include muscle pain, bone pain, tingly sensation in hands or feet, muscle weakness • Treatment includes lifestyle changes, vitamin D supplements, medication • Involves endocrinology, pediatric endocrinology & diabetes Overview Related Specialists Thomas Carpenter Silvio Inzucchi Clemens Bergwitz MD More Related Specialists Print Overview There are eight types of vitamin B. The symptoms of a vitamin B deficiency vary depending on which B vitamin you’re deficient in, and may include fatigue, skin rash, or confusion. If you suspect xHKqn.