AGA is among the most typical hair loss patterns that affect males. There are 35 to 40 million who have lost hair due to AGA in the United States. For some, AGA results in baldness over the majority of the scalp area. How much hair is lost is a result ranging from the most severe case of AGA to the least amount (unnoticeable) hair loss just above the eyebrows in the front temporal area. For some men, the loss halts there and doesn’t continue. For others, hair loss spreads to other areas of the scalp. The speed of hair loss is fast for some males and slow for others. How one will look after hair loss has finally stopped can be predicted by a physical hair restoration specialist.
The Norwood-Hamilton Scale manifests a variety of AGA patterns. Physician hair restoration specialists use this scale when assessing hair loss and determining what hair loss treatment method should apply.
According to the Norwood-Hamilton Scale, AGA has a feature that enables hair to be transplanted. Even those who sustained the most severe cases of hair loss still have hair on the back and sides of the head as well as on the back of the neck. The areas where hair remains are affected differently by the gene(s) from follicles on the top and front of the head. Hence, the follicles that make up the back and the sides of the head are so called “preserved” and healthy follicles. They can be removed and transplanted to regions where the hair was lost.