Hair miniaturization, genetic hair loss?

Is hair miniaturization a sure sign of male pattern baldness? Is there any other possible causes of hair miniaturization on the hairline and all over the head or is mpb the only thing to cause these symptoms

Miniaturization is the stage that the hair shafts go through as they are progressively lost with genetic balding. They often get thinner and thinner and eventually shorter and stop growing before falling out and never returning. That is the most common scenario for hair loss.