Patterns Of Hair Loss

Aging encourages hair loss affecting approximately 50% males / 20% females, tending to follow a typical receding pattern. Genetic pattern hair loss aside from other hair diseases starts from the top advancing down the head. One of the causes of losing hair is the male hormone dihydrotestosterone (DHT). Testosterone converted in the body as DHT by the enzyme 5 alpha reductase, causes the growth of follicles to cease in people prone to their genetic make-up. This targets the crown and mid scalp areas. Frontal hair loss has other causes currently under research.

Males with genetic hair loss often become at least partially bald and the hair loss follows particular patterns. The most common pattern of genetic hair loss for men is characterized by a thinning of hair at the hairline and/or the crown area. Over time, the thinning expands, receding from the hairline and in a circular fashion from the crown, until the two areas of baldness meet in the middle. The final result is a completely bald scalp except for a strip of hair along the back of the head above the nape of the neck. Though this is the most common pattern that male pattern baldness follows, there are many other variations as well. Norwood's classification describes this most common pattern but it is somewhat limited in addressing the other possibilities, including the one that applies to women. In the following section, I will outline the new patterns of genetic hair loss that have been identified, giving you a better understanding of the variety of ways in which genetic hair loss occurs. Norwood's classification has been used to classify male pattern hair loss for many decades and has been useful in many cases. However, it is not complete. Norwood's classification only describes one pattern of male genetic hair loss on a scale of seven degrees of severity. Therefore, a reclassification of genetic pattern hair loss is necessary to account for the other possible patterns of male and female genetic hair loss.


These new patterns can be applied to varying degrees of hair loss. together with the new classification one can easily assess their own state of hair loss.

patter of hair loss