Usually, vitamin B5 deficiency is caused by a genetic mutation where pantothenic acid cannot be metabolised. The disorder is known as pantothenate kinase-associated neurodegeneration (PKAN). Apart from this, malnourishment also results in vitamin B5 deficiency.

What happens if you are deficient in vitamin B5?

Pantothenic acid deficiency is very rare in the United States. Severe deficiency can cause numbness and burning of the hands and feet, headache, extreme tiredness, irritability, restlessness, sleeping problems, stomach pain, heartburn, diarrhea, nausea, vomiting, and loss of appetite.

Which disease is caused by the deficiency of vitamin A?

Night blindness is one of the first signs of vitamin A deficiency. In its more severe forms, vitamin A deficiency contributes to blindness by making the cornea very dry, thus damaging the retina and cornea.