No hair loss is not directly related to dandruff, dandruff is called as seborrhea in technical terms. Dandruff is the scaling of scalp skin which is very superficial and does not involve the deeper parts of the scalp where actual follicle of hair lies. As dandruff is not in contact with hair follicles so it can't cause hair loss as such. hair three-step cycle called anagen, catagen and telogen shorter the cycle more is the hair loss, DHT actually shortens this cycle that's why causes hair loss by affecting hair follicles.
So no dandruff don't cause hair loss, so you now need to find a root cause of hair loss. have a consultation with one of our consultants then he or she will help you out.
Still, sometimes hair loss can be self-diagnosed. Here is the blog on signs and symptoms that will help you understand the whether hair loss is happening or not.
And about dandruff wash your scalp with Nizoral containing shampoo and moisturizer. Hereby I am sharing the article on how to choose or which is the best shampoo for hair loss.
Here is the article by Stylecraze on dandruff and hair loss which will help to understand the relation between them.