Could Too Many Vitamins Cause Hair Loss?

5 months ago I had my hair dyed back to my natural color brown. Since then, I have been shedding hair. I went on pre natal vitamins to see if it was a vitamin defeciency. But still no end. Could too much vitamins cause hair loss and should i stop taking them? I also tried biotin and noticed I would lose more hair? Also all my blood tests came back normal. After the hair dye I was diagnosed with sebrohheic dermatitis. But I don’t scratch my head, i just have dry scalp and little flakes. Could that be causing the shedding throught the day? Also when I applied a medicated shampoo to my scalp it irritated it so bad that I could’nt be around cleaning agents or strong perfumes, it made my scalp burn just smelling the fumes? What should I do? No dermatologist can come up with a solution for me? Should I just stop taking the prenatal vitamins or is the cause from the sebrohheic?

Very high doses of vitamin A could cause hair loss. Remember that this is for the very high doses and regular doses that are necessary for our daily maintenance should not affect the hair growth/loss. I don’t think your vitamins have been responsible for seborrheic dermatitis and I don’t think usual doses of vitamins in prenatal pills can cause hair loss.

Inflammation of skin or dermatitis can cause hair loss if you scratch it. It can also accelerate the hair loss due to other causes such as androgenetic alopecia with vigorous brushing.