Eventhough my father, mother, and all others in my family are having enough hair on their scalp why i have not hair even for covering my scalp?

Genetic hair loss: The most common kind of hair loss in men is a male patterned hair loss that is mostly on top. There is a genetic basis, but it is difficult at times to figure out why one person in the family has this hair loss and others do not.It is possible that you have a different kind of hair loss, and a dermatologist would have to examine you. There are treatments: Minoxidil lotion and Propecia (finasteride) pills.